<s>
The	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
technical	O
specifications	O
describe	O
the	O
various	O
components	O
of	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
video	O
game	O
console	O
.	O
</s>
<s>
The	O
console	O
features	O
a	B-General_Concept
port	O
on	O
the	O
top	O
when	O
vertical	O
(	O
left	O
side	O
when	O
horizontal	O
)	O
to	O
which	O
a	B-General_Concept
custom-housed	O
hard	B-Device
disk	I-Device
drive	I-Device
unit	O
can	O
be	O
attached	O
in	O
sizes	O
of	O
either	O
20	O
,	O
60	O
,	O
120	O
,	O
250	O
,	O
320	O
,	O
500GB	O
;	O
and	O
as	O
of	O
April	O
2015	O
all	O
2.5	O
"	O
SATA	O
Hard	B-Device
Drives	I-Device
up	O
to	O
2	O
TB	O
,	O
the	O
user	O
can	O
use	O
the	O
format	O
option	O
from	O
system	O
settings	O
to	O
utilize	O
the	O
new	O
HDD	O
.	O
</s>
<s>
Inside	O
,	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
uses	O
the	O
triple-core	O
IBM	O
designed	O
Xenon	B-Device
as	O
its	O
CPU	B-Device
,	O
with	O
each	O
core	O
capable	O
of	O
simultaneously	O
processing	O
two	O
threads	B-Operating_System
,	O
and	O
can	O
therefore	O
operate	O
on	O
up	O
to	O
six	O
threads	B-Operating_System
at	O
once	O
.	O
</s>
<s>
Graphics	O
processing	O
is	O
handled	O
by	O
the	O
ATI	O
Xenos	B-Device
,	O
which	O
has	O
10MB	O
of	O
eDRAM	O
.	O
</s>
<s>
Xbox	B-Operating_System
360	I-Operating_System
took	O
a	B-General_Concept
different	O
approach	O
to	O
hardware	O
compared	O
to	O
its	O
predecessor	O
.	O
</s>
<s>
The	O
XCPU	B-Device
,	O
named	O
Xenon	B-Device
at	O
Microsoft	O
and	O
"	O
Waternoose	B-Device
"	O
at	O
IBM	O
,	O
is	O
a	B-General_Concept
custom	O
triple-core	O
64-bit	O
PowerPC-based	O
design	O
by	O
IBM	O
.	O
</s>
<s>
The	O
CPU	B-Device
emphasized	O
high	O
floating	B-Algorithm
point	I-Algorithm
performance	O
through	O
multiple	O
FPU	B-General_Concept
and	O
SIMD	B-Device
vector	B-Operating_System
processors	I-Operating_System
in	O
each	O
core	O
.	O
</s>
<s>
The	O
SIMD	B-Device
vector	B-Operating_System
processor	I-Operating_System
(	O
VMX128	O
)	O
was	O
modified	O
for	O
the	O
Xbox	B-Protocol
to	O
include	O
a	B-General_Concept
dot-product	O
instruction	O
.	O
</s>
<s>
This	O
led	O
to	O
an	O
approximate	O
50	O
percent	O
savings	O
in	O
required	O
band-width	O
and	O
memory	O
footprint	O
making	O
the	O
CPU	B-Device
having	O
a	B-General_Concept
theoretical	O
peak	O
performance	O
of	O
115.2GFLOPS	O
,	O
being	O
capable	O
of	O
9.6	O
billion	O
dot	O
products	O
per	O
second	O
.	O
</s>
<s>
Each	O
core	O
of	O
the	O
CPU	B-Device
was	O
capable	O
of	O
simultaneous	B-Operating_System
multithreading	I-Operating_System
and	O
was	O
clocked	O
at	O
3.2GHz	O
.	O
</s>
<s>
However	O
,	O
to	O
reduce	O
CPU	B-Device
die	O
size	O
,	O
complexity	O
,	O
cost	O
,	O
and	O
power	O
demands	O
,	O
the	O
processor	O
used	O
in-order	O
execution	O
in	O
contrast	O
to	O
the	O
Intel	O
Coppermine	O
128-based	O
Pentium	B-General_Concept
III	I-General_Concept
used	O
in	O
the	O
original	O
Xbox	B-Protocol
,	O
which	O
used	O
more	O
complex	O
out-of-order	B-General_Concept
execution	I-General_Concept
.	O
</s>
<s>
The	O
original	O
chip	O
used	O
a	B-General_Concept
90	O
nm	O
process	O
,	O
although	O
a	B-General_Concept
newer	O
65	O
nm	O
process	O
SOI	B-Algorithm
revision	O
was	O
implemented	O
on	O
later	O
models	O
,	O
which	O
was	O
in-turn	O
superseded	O
by	O
a	B-General_Concept
45nm	O
combined	O
CPU	B-Device
and	O
GPU	B-Device
chip	O
.	O
</s>
<s>
A	B-General_Concept
21.6GB/s	O
front	B-Architecture
side	I-Architecture
bus	I-Architecture
,	O
aggregated	O
10.8GB/s	O
upstream	O
and	O
downstream	O
,	O
connected	O
Xenon	B-Device
with	O
the	O
graphics	O
processor/northbridge	O
.	O
</s>
<s>
Xenon	B-Device
was	O
equipped	O
with	O
an	O
8th	O
way	O
set	O
associative	O
1MB	O
Level	O
2	O
cache	O
on-die	O
running	O
at	O
half	O
CPU	B-Device
clock	O
speed	O
.	O
</s>
<s>
This	O
cache	O
was	O
shared	O
amongst	O
the	O
three	O
CPU	B-Device
cores	O
.	O
</s>
<s>
Each	O
core	O
had	O
separate	O
L1	O
caches	O
,	O
each	O
containing	O
a	B-General_Concept
two-way	O
set	O
associative	O
32-Kbyte	O
L1	O
instruction	O
cache	O
and	O
a	B-General_Concept
four-way	O
set	O
associative	O
32-Kbyte	O
L1	O
data	O
cache	O
.	O
</s>
<s>
The	O
CPU	B-Device
also	O
contained	O
ROM	O
storing	O
Microsoft	O
private	O
encrypted	O
keys	O
,	O
used	O
to	O
decrypt	O
game	O
data	O
.	O
</s>
<s>
The	O
heat	O
sink	O
implemented	O
to	O
cool	O
the	O
Xenon	B-Device
CPU	I-Device
was	O
composed	O
of	O
aluminum	O
fins	O
with	O
a	B-General_Concept
copper	O
base	O
,	O
and	O
a	B-General_Concept
heat	O
pipe	O
.	O
</s>
<s>
Newer	O
revisions	O
,	O
which	O
had	O
a	B-General_Concept
smaller	O
core	O
,	O
do	O
not	O
feature	O
the	O
heat	O
pipe	O
or	O
copper	O
base	O
.	O
</s>
<s>
The	O
heat	O
sink	O
was	O
cooled	O
by	O
two	O
70mm	O
fans	O
at	O
the	O
rear	O
of	O
the	O
console	O
on	O
original-style	O
consoles	O
,	O
while	O
a	B-General_Concept
single	O
fan	O
mounted	O
on	O
the	O
side	O
of	O
the	O
consoles	O
was	O
used	O
in	O
Xbox	B-Operating_System
360	I-Operating_System
S	O
consoles	O
.	O
</s>
<s>
There	O
were	O
several	O
types	O
of	O
fan	O
used	O
in	O
Xbox	B-Architecture
360s	I-Architecture
,	O
which	O
were	O
produced	O
by	O
Nidec	O
,	O
Sunon	O
,	O
and	O
Delta	O
Electronics	O
.	O
</s>
<s>
During	O
read	O
streaming	O
into	O
the	O
CPU	B-Device
,	O
a	B-General_Concept
custom	O
prefetch	O
instruction	O
,	O
extended	O
data	O
cache	O
block	O
touch	O
(	O
xDCBT	O
)	O
prefetches	O
data	O
directly	O
to	O
the	O
L1	O
data	O
cache	O
of	O
the	O
intended	O
core	O
,	O
which	O
skips	O
putting	O
the	O
data	O
in	O
the	O
L2	O
cache	O
to	O
avoid	O
thrashing	B-General_Concept
the	O
L2	O
cache	O
.	O
</s>
<s>
Writes	O
streaming	O
from	O
each	O
core	O
skip	O
the	O
L1	O
cache	O
,	O
due	O
to	O
its	O
no-write	O
allocation	O
(	O
avoids	O
thrashing	B-General_Concept
of	O
high-bandwidth	O
,	O
transient	O
,	O
write-only	O
data	O
streams	O
on	O
the	O
L1	O
cache	O
)	O
,	O
and	O
goes	O
directly	O
to	O
the	O
L2	O
cache	O
.	O
</s>
<s>
The	O
system	O
allows	O
for	O
the	O
GPU	B-Device
to	O
directly	O
read	O
data	O
produced	O
by	O
the	O
CPU	B-Device
without	O
going	O
to	O
main	O
memory	O
.	O
</s>
<s>
In	O
this	O
specific	O
case	O
of	O
data	O
streaming	O
,	O
called	O
Xbox	B-Protocol
procedural	O
synthesis	O
(	O
XPS	O
)	O
,	O
the	O
CPU	B-Device
is	O
effectively	O
a	B-General_Concept
data	O
decompressor	O
,	O
generating	O
geometry	O
on-the-fly	O
for	O
consumption	O
by	O
the	O
GPU	B-Device
3D	O
core	O
.	O
</s>
<s>
While	O
the	O
first	O
Xbox	B-Protocol
's	O
graphics	B-Architecture
processing	I-Architecture
unit	I-Architecture
was	O
produced	O
by	O
Nvidia	O
,	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
had	O
a	B-General_Concept
chip	O
designed	O
by	O
ATI	O
called	O
Xenos	B-Device
.	O
</s>
<s>
The	O
GPU	B-Device
package	O
contains	O
two	O
separate	O
silicon	O
dies	O
,	O
each	O
built	O
on	O
a	B-General_Concept
90nm	O
process	O
with	O
a	B-General_Concept
clock	O
speed	O
of	O
500MHz	O
;	O
the	O
GPU	B-Device
proper	O
,	O
manufactured	O
by	O
TSMC	O
and	O
a	B-General_Concept
10MB	O
eDRAM	O
daughter-die	O
,	O
manufactured	O
by	O
NEC	O
.	O
</s>
<s>
Thanks	O
to	O
the	O
daughter	O
die	O
,	O
the	O
Xenos	B-Device
can	O
do	O
4×	O
MSAA	B-Algorithm
,	O
z-buffering	O
,	O
and	O
alpha	B-Algorithm
blending	I-Algorithm
with	O
no	O
appreciable	O
performance	O
penalty	O
on	O
the	O
GPU	B-Device
.	O
</s>
<s>
The	O
GPU	B-Device
also	O
houses	O
additional	O
capabilities	O
typically	O
separated	O
into	O
a	B-General_Concept
motherboard	B-Device
chipset	B-Device
in	O
PC	O
systems	O
,	O
effectively	O
replacing	O
the	O
northbridge	B-Device
chip	I-Device
.	O
</s>
<s>
It	O
has	O
a	B-General_Concept
theoretical	O
peak	O
of	O
240	O
GFLOPS	O
.	O
</s>
<s>
Due	O
to	O
the	O
GPU	B-Device
frequently	O
overheating	O
in	O
early	O
motherboard	B-Device
models	O
,	O
Microsoft	O
revised	O
the	O
GPU	B-Device
heat	O
sink	O
in	O
order	O
to	O
eliminate	O
thermal	O
throttling	O
.	O
</s>
<s>
The	O
console	O
features	O
512MB	O
of	O
GDDR3	O
RAM	B-Architecture
clocked	O
at	O
700MHz	O
with	O
an	O
effective	O
transmission	O
rate	O
of	O
1.4GHz	O
on	O
a	B-General_Concept
128-bit	O
bus	O
.	O
</s>
<s>
The	O
memory	O
is	O
shared	O
by	O
the	O
CPU	B-Device
and	O
the	O
GPU	B-Device
via	O
the	O
unified	B-Operating_System
memory	I-Operating_System
architecture	I-Operating_System
.	O
</s>
<s>
This	O
memory	O
is	O
produced	O
by	O
either	O
Samsung	B-Application
or	O
Qimonda	O
.	O
</s>
<s>
According	O
to	O
Mark	O
Rein	O
of	O
Epic	O
Games	O
,	O
Microsoft	O
had	O
originally	O
planned	O
on	O
using	O
only	O
256MB	O
of	O
RAM	B-Architecture
,	O
but	O
the	O
decision	O
to	O
increase	O
it	O
was	O
based	O
on	O
Epic	O
's	O
upcoming	O
Gears	B-Application
of	I-Application
War	I-Application
title	O
.	O
</s>
<s>
Shortly	O
thereafter	O
,	O
Epic	O
was	O
the	O
first	O
studio	O
told	O
of	O
new	O
512MB	O
size	O
specification	O
and	O
claimed	O
it	O
cost	O
them	O
a	B-General_Concept
billion	O
dollars	O
but	O
felt	O
it	O
was	O
better	O
for	O
gamers	O
.	O
</s>
<s>
The	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
has	O
an	O
extensive	O
amount	O
of	O
bandwidth	O
in	O
comparison	O
to	O
its	O
competition	O
;	O
however	O
,	O
this	O
statistic	O
includes	O
the	O
eDRAM	O
logic	O
to	O
memory	O
bandwidth	O
,	O
and	O
not	O
internal	O
CPU	B-Device
bandwidths	O
.	O
</s>
<s>
The	O
high	O
bandwidth	O
is	O
used	O
primarily	O
for	O
z-buffering	O
,	O
alpha	B-Algorithm
blending	I-Algorithm
,	O
and	O
antialiasing	B-Algorithm
;	O
it	O
saves	O
time	O
and	O
space	O
on	O
the	O
GPU	B-Device
die	O
.	O
</s>
<s>
Between	O
the	O
eDRAM	O
die	O
and	O
the	O
GPU	B-Device
,	O
data	O
is	O
transferred	O
at	O
32GB/s	O
.	O
</s>
<s>
The	O
memory	O
interface	O
bus	O
has	O
a	B-General_Concept
bandwidth	O
of	O
22.40GB/s	O
and	O
the	O
Southbridge	B-Device
a	B-General_Concept
bandwidth	O
of	O
0.5GB/s	O
.	O
</s>
<s>
All	O
games	O
made	O
for	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
are	O
required	O
to	O
support	O
at	O
least	O
Dolby	O
Digital	O
5.1	O
surround	O
sound	O
.	O
</s>
<s>
Sound	O
files	O
for	O
games	O
are	O
encoded	O
using	O
Microsoft	O
's	O
XMA	B-Application
audio	I-Application
format	I-Application
.	O
</s>
<s>
An	O
MPEG-2	B-Algorithm
decoder	O
is	O
included	O
for	O
DVD	O
video	O
playback	O
.	O
</s>
<s>
VC-1	B-Operating_System
or	O
WMV	B-Device
is	O
used	O
for	O
streaming	B-Application
video	I-Application
and	O
other	O
video	O
is	O
compressed	O
using	O
VC-1	B-Operating_System
at	O
non-HD	O
NTSC	O
and	O
PAL	B-Language
resolutions	O
or	O
WMV	B-Device
HD	B-Device
.	O
</s>
<s>
The	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
also	O
supports	O
H.263	B-Algorithm
and	O
H.264	B-Application
MPEG-4	B-Algorithm
videos	O
.	O
</s>
<s>
Unlike	O
the	O
original	O
Xbox	B-Protocol
,	O
voice	O
communication	O
is	O
handled	O
by	O
the	O
console	O
,	O
not	O
by	O
the	O
game	O
code	O
,	O
allowing	O
for	O
cross-game	O
communication	O
.	O
</s>
<s>
Initially	O
there	O
were	O
no	O
digital	O
video	O
outputs	O
such	O
as	O
DVI	B-Protocol
or	O
HDMI	B-Protocol
on	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
;	O
instead	O
,	O
HD-quality	O
output	O
could	O
only	O
be	O
produced	O
over	O
component	O
video	O
(	O
used	O
by	O
both	O
the	O
3	O
RCA	O
component	O
cable	O
and	O
the	O
Japanese	O
D-terminal	B-Protocol
cable	O
)	O
and	O
later	O
VGA	B-Protocol
(	O
via	O
a	B-General_Concept
software	O
update	O
)	O
.	O
</s>
<s>
An	O
HDMI	B-Protocol
port	O
was	O
introduced	O
to	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
by	O
July	O
2007	O
with	O
the	O
introduction	O
of	O
the	O
Elite	O
model	O
.	O
</s>
<s>
All	O
Xbox	B-Operating_System
360	I-Operating_System
SKUs	O
currently	O
manufactured	O
feature	O
an	O
HDMI	B-Protocol
port	O
.	O
</s>
<s>
A	B-General_Concept
wide	O
array	O
of	O
SDTV	B-Device
and	O
HDTV	B-Device
resolutions	O
are	O
supported	O
by	O
the	O
console	O
hardware	O
;	O
up	O
to	O
1080p	O
after	O
the	O
October	O
2006	O
software	O
upgrade	O
.	O
</s>
<s>
While	O
most	O
games	O
are	O
rendered	O
natively	O
at	O
720p	O
,	O
the	O
video	O
from	O
all	O
games	O
can	O
be	O
scaled	B-Algorithm
by	O
the	O
hardware	O
to	O
whatever	O
resolution	O
the	O
user	O
has	O
set	O
in	O
the	O
console	O
's	O
settings	O
;	O
from	O
480i	O
NTSC	O
and	O
576i	O
PAL	B-Language
all	O
the	O
way	O
to	O
1080p	O
HDTV	B-Device
.	O
</s>
<s>
Xbox	B-Operating_System
360	I-Operating_System
is	O
equipped	O
with	O
a	B-General_Concept
12×	O
DVD	O
drive	O
,	O
with	O
a	B-General_Concept
data	B-Device
transfer	I-Device
rate	I-Device
of	O
16.5MB/s	O
.	O
</s>
<s>
The	O
original	O
production	O
DVD	O
drives	O
were	O
manufactured	O
by	O
LG	O
,	O
Samsung	B-Application
,	O
and	O
Sony	O
.	O
</s>
<s>
Beginning	O
in	O
November	O
2006	O
,	O
a	B-General_Concept
new	O
model	O
the	O
BenQ	O
VAD6038	O
was	O
introduced	O
,	O
which	O
is	O
said	O
to	O
run	O
faster	O
than	O
the	O
previous	O
models	O
and	O
,	O
in	O
addition	O
,	O
is	O
much	O
quieter	O
.	O
</s>
<s>
There	O
is	O
a	B-General_Concept
new	O
drive	O
by	O
LiteOn	O
.	O
</s>
<s>
Games	O
are	O
stored	O
on	O
standard	O
8.5GB	O
dual-layer	O
DVD-ROMs	O
;	O
however	O
initially	O
only	O
7.3GB	O
(	O
6.8GiB	O
)	O
were	O
allocated	O
to	O
be	O
used	O
for	O
games	O
on	O
the	O
"	O
Xbox	B-Protocol
Game	O
Disc	O
2	O
"	O
(	O
XGD2	O
)	O
early	O
format	O
.	O
</s>
<s>
The	O
option	O
to	O
apply	O
a	B-General_Concept
regional	O
lockout	O
to	O
games	O
is	O
available	O
to	O
publishers	O
,	O
although	O
DVD	O
region	O
codes	O
are	O
always	O
enforced	O
for	O
movies	O
.	O
</s>
<s>
The	O
drive	O
is	O
able	O
to	O
read	O
both	O
DVD±R	O
and	O
DVD±RW	O
in	O
addition	O
to	O
being	O
able	O
to	O
play	O
DVD-Video	O
out	B-General_Concept
of	I-General_Concept
the	I-General_Concept
box	I-General_Concept
,	O
unlike	O
its	O
predecessor	O
,	O
which	O
required	O
the	O
purchase	O
of	O
an	O
add-on	O
remote	O
.	O
</s>
<s>
The	O
system	O
is	O
also	O
capable	O
of	O
playing	O
standard	O
CDs	O
along	O
with	O
CD-R/RW	O
,	O
CD-DA	O
,	O
CD-ROM	B-Device
XA	O
,	O
CD-Extra	O
,	O
WMA-CD	O
,	O
MP3-CD	O
,	O
and	O
JPEG	O
Photo	O
CD	O
.	O
</s>
<s>
Some	O
users	O
reported	O
problems	O
with	O
the	O
disc	O
drive	O
,	O
as	O
when	O
a	B-General_Concept
user	O
changes	O
the	O
console	O
's	O
orientation	O
,	O
the	O
inserted	O
disc	O
may	O
brush	O
against	O
the	O
drive	O
's	O
pickup	O
assembly	O
and	O
incur	O
scratches	O
to	O
it	O
.	O
</s>
<s>
The	O
users	O
manual	O
advises	O
against	O
changing	O
the	O
console	O
's	O
position	O
while	O
there	O
is	O
a	B-General_Concept
disc	O
in	O
the	O
drive	O
.	O
</s>
<s>
Announced	O
at	O
CES	O
2006	O
and	O
first	O
publicly	O
shown	O
at	O
E3	O
2006	O
,	O
an	O
external	B-Device
HD	I-Device
DVD	I-Device
drive	I-Device
was	O
released	O
in	O
North	O
America	O
on	O
November	O
7	O
,	O
2006	O
(	O
for	O
US	O
$199.99	O
)	O
and	O
in	O
Japan	O
on	O
November	O
17	O
,	O
2006	O
(	O
for	O
¥	O
19,800	O
)	O
.	O
</s>
<s>
In	O
the	O
UK	O
,	O
France	O
and	O
Germany	O
,	O
the	O
HD	B-Device
DVD	O
drive	O
was	O
released	O
for	O
€199.99	O
/	O
£129.99	O
.	O
</s>
<s>
The	O
HD	B-Device
DVD	O
drive	O
was	O
bundled	O
for	O
a	B-General_Concept
limited	O
time	O
with	O
an	O
Xbox	B-Operating_System
360	I-Operating_System
Universal	O
Media	O
Remote	O
,	O
as	O
well	O
as	O
an	O
HD	B-Device
DVD	O
copy	O
of	O
Peter	O
Jackson	O
's	O
King	O
Kong	O
.	O
</s>
<s>
The	O
drive	O
plays	O
HD	B-Device
DVD	O
movies	O
,	O
although	O
all	O
Xbox	B-Operating_System
360	I-Operating_System
games	O
will	O
remain	O
on	O
the	O
DVD	O
format	O
.	O
</s>
<s>
Microsoft	O
had	O
no	O
plans	O
to	O
include	O
an	O
internal	O
HD	B-Device
DVD	O
player	O
in	O
future	O
Xbox	B-Operating_System
360	I-Operating_System
designs	O
.	O
</s>
<s>
The	O
drive	O
connects	O
to	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
via	O
USB	O
and	O
contains	O
two	O
integrated	O
USB	O
ports	O
on	O
the	O
rear	O
.	O
</s>
<s>
Games	O
can	O
not	O
be	O
played	O
on	O
the	O
HD	B-Device
DVD	O
drive	O
.	O
</s>
<s>
Microsoft	O
has	O
since	O
discontinued	O
the	O
HD	B-Device
DVD	O
add-on	O
since	O
the	O
format	O
was	O
officially	O
dropped	O
by	O
Toshiba	O
.	O
</s>
<s>
Manufacturer(s )	O
ModelFirmware	O
version(s )	O
NotesToshiba-SamsungTS-H943MS25MS28Hitachi-LGGDR-3120L003200360040004600470058005900780079FL/FKDL10N	O
(	O
Xbox	B-Operating_System
360	I-Operating_System
S	O
)	O
0500AAPhilips	O
&	O
BenQ	O
(	O
PBDS	O
)	O
VAD603862430C64930C	O
04421CNew	O
FW	O
after	O
System	O
Update	O
2.0.13146.0	O
version	O
.	O
</s>
<s>
(	O
02510C	O
)	O
DG-16D4S	O
(	O
Xbox	B-Operating_System
360	I-Operating_System
S	O
)	O
950402250401027210711214New	O
FW	O
after	O
System	O
Update	O
2.0.13146.0	O
version	O
.	O
</s>
<s>
The	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
uses	O
standard	O
2.5	O
"	O
SATA	O
hard	B-Device
disk	I-Device
drives	I-Device
(	O
HDDs	O
)	O
held	O
within	O
custom	O
enclosures	O
.	O
</s>
<s>
These	O
units	O
have	O
a	B-General_Concept
custom	O
connector	O
to	O
facilitate	O
connection	O
to	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
and	O
the	O
drives	O
themselves	O
feature	O
custom	O
firmware	O
(	O
making	O
stand-alone	O
drives	O
incompatible	O
)	O
.	O
</s>
<s>
The	O
drives	O
are	O
detachable	O
,	O
making	O
it	O
possible	O
to	O
move	O
data	O
from	O
one	O
console	O
to	O
another	O
,	O
and	O
to	O
upgrade	O
the	O
size	O
of	O
drive	O
on	O
a	B-General_Concept
console	O
.	O
</s>
<s>
The	O
hard	B-Device
drives	I-Device
themselves	O
are	O
manufactured	O
by	O
various	O
companies	O
,	O
including	O
Fujitsu	O
,	O
Seagate	O
,	O
Samsung	B-Application
,	O
Hitachi	O
and	O
Western	O
Digital	O
.	O
</s>
<s>
Certain	O
Western	O
Digital	O
hard	B-Device
disk	I-Device
drives	I-Device
can	O
be	O
modified	O
with	O
a	B-General_Concept
program	O
called	O
HDDHackr	O
to	O
be	O
used	O
with	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
.	O
</s>
<s>
Approximately	O
7GB	O
are	O
reserved	O
for	O
system	O
use	O
(	O
4GB	O
of	O
that	O
portion	O
are	O
reserved	O
for	O
game	O
title	O
caching	O
and	O
other	O
hard	B-Device
drive	I-Device
specific	O
elements	O
in	O
games	O
that	O
support	O
the	O
hard	B-Device
drive	I-Device
,	O
and	O
an	O
additional	O
2GB	O
are	O
reserved	O
for	O
use	O
by	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
backwards-compatibility	O
software	O
)	O
.	O
</s>
<s>
The	O
original	O
Pro	O
configuration	O
of	O
the	O
system	O
came	O
with	O
a	B-General_Concept
20GB	O
hard	B-Device
drive	I-Device
,	O
which	O
was	O
also	O
available	O
to	O
purchase	O
separately	O
(	O
for	O
the	O
Core	O
model	O
,	O
and	O
later	O
the	O
Arcade	O
model	O
,	O
which	O
did	O
not	O
include	O
a	B-General_Concept
HDD	O
)	O
.	O
</s>
<s>
In	O
April	O
2007	O
,	O
Microsoft	O
released	O
the	O
Elite	O
console	O
,	O
which	O
included	O
a	B-General_Concept
black	O
120GB	O
HDD	O
;	O
a	B-General_Concept
grey	O
120GB	O
drive	O
was	O
also	O
later	O
made	O
available	O
at	O
retail	O
.	O
</s>
<s>
In	O
November	O
2009	O
,	O
Microsoft	O
released	O
the	O
"	O
Super	O
Elite	O
"	O
console	O
,	O
as	O
a	B-General_Concept
bundle	O
with	O
the	O
highly	O
anticipated	O
game	O
Call	B-Application
of	I-Application
Duty	I-Application
:	I-Application
Modern	I-Application
Warfare	I-Application
2	I-Application
.	O
</s>
<s>
This	O
console	O
was	O
like	O
the	O
typical	O
black	O
Elite	O
,	O
but	O
with	O
Call	O
of	O
Duty	O
graphics	O
added	O
and	O
for	O
the	O
first	O
time	O
included	O
a	B-General_Concept
250GB	O
hard	B-Device
drive	I-Device
(	O
which	O
holds	O
up	O
to	O
228GB	O
of	O
data	O
after	O
system	O
information	O
is	O
stored	O
)	O
.	O
</s>
<s>
No	O
standard	O
(	O
non-special	O
edition	O
)	O
configuration	O
of	O
the	O
original	O
console	O
ever	O
included	O
a	B-General_Concept
250GB	O
drive	O
,	O
but	O
they	O
were	O
later	O
made	O
available	O
at	O
retail	O
.	O
</s>
<s>
In	O
June	O
2010	O
,	O
Microsoft	O
announced	O
a	B-General_Concept
new	O
version	O
of	O
the	O
console	O
,	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
S	O
,	O
which	O
used	O
a	B-General_Concept
new	O
form	O
factor	O
for	O
its	O
250GB	O
hard	B-Device
drives	I-Device
.	O
</s>
<s>
As	O
such	O
,	O
original	O
style	O
hard	B-Device
drives	I-Device
cannot	O
be	O
used	O
in	O
Xbox	B-Operating_System
360	I-Operating_System
S	O
consoles	O
,	O
and	O
vice	O
versa	O
,	O
without	O
modification	O
.	O
</s>
<s>
In	O
June	O
2011	O
,	O
Microsoft	O
announced	O
a	B-General_Concept
specially	O
branded	O
Gears	B-Application
of	I-Application
War	I-Application
3	I-Application
Limited	O
Collector	O
's	O
Edition	O
Xbox	B-Operating_System
360	I-Operating_System
S	O
console	O
to	O
coincide	O
with	O
the	O
launch	O
of	O
Gears	B-Application
of	I-Application
War	I-Application
3	I-Application
.	O
</s>
<s>
At	O
320GB	O
,	O
the	O
included	O
hard	B-Device
drive	I-Device
is	O
the	O
largest	O
available	O
for/with	O
the	O
original	O
Xbox	B-Operating_System
360	I-Operating_System
model	O
.	O
</s>
<s>
In	O
August	O
2014	O
,	O
Microsoft	O
announced	O
and	O
released	O
a	B-General_Concept
new	O
500	O
GB	O
hard	B-Device
drive	I-Device
for	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
S	O
console	O
model	O
,	O
currently	O
the	O
largest	O
hard	B-Device
drive	I-Device
available	O
for	O
or	O
with	O
any	O
Xbox	B-Operating_System
360	I-Operating_System
model	O
.	O
</s>
<s>
All	O
versions	O
of	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
come	O
with	O
a	B-General_Concept
built-in	O
10	O
to	O
100Mbit/s	O
wired	O
Ethernet	O
network	O
adapter	O
.	O
</s>
<s>
The	O
"	O
Xbox	B-Operating_System
360	I-Operating_System
Wireless	O
Adapter	O
"	O
(	O
identifiable	O
as	O
white	O
with	O
one	O
antenna	O
)	O
connects	O
via	O
a	B-General_Concept
USB	O
port	O
and	O
adds	O
support	O
for	O
802.11a	O
and	O
802.11b/g	O
Wi-Fi	O
.	O
</s>
<s>
The	O
original	O
Xbox	B-Operating_System
360	I-Operating_System
model	O
features	O
a	B-General_Concept
pair	O
of	O
notches	O
on	O
the	O
rear	O
of	O
the	O
console	O
,	O
above	O
the	O
USB	O
socket	O
,	O
to	O
which	O
the	O
adapter	O
can	O
be	O
attached	O
.	O
</s>
<s>
Alternatively	O
,	O
a	B-General_Concept
pair	O
of	O
fold-out	O
feet	O
on	O
the	O
adapter	O
can	O
be	O
used	O
to	O
stand	O
it	O
up	O
separately	O
.	O
</s>
<s>
The	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
S	O
and	O
Xbox	B-Operating_System
360	I-Operating_System
E	O
consoles	O
feature	O
built-in	O
support	O
for	O
802.11b/g/n	O
but	O
on	O
the	O
2.4GHz	O
band	O
only	O
.	O
</s>
<s>
Microsoft	O
avoids	O
outright	O
announcements	O
of	O
new	O
motherboard	B-Device
production	O
runs	O
and	O
their	O
subsequent	O
appearance	O
in	O
the	O
market	O
in	O
part	O
due	O
to	O
uneven	O
distribution	O
causing	O
buyer	O
's	O
remorse	O
and	O
to	O
prevent	O
purchaser	O
delay	O
.	O
</s>
<s>
However	O
,	O
several	O
major	O
(	O
and	O
many	O
minor	O
)	O
motherboard	B-Device
revisions	O
are	O
introduced	O
to	O
reduce	O
costs	O
and	O
to	O
allow	O
them	O
to	O
run	O
cooler	O
while	O
consuming	O
less	O
power	O
.	O
</s>
<s>
Note	O
that	O
there	O
is	O
no	O
clear	O
divide	O
between	O
the	O
appearance	O
of	O
motherboard	B-Device
revisions	O
in	O
retail	O
.	O
</s>
<s>
The	O
power	O
connectors	O
on	O
the	O
back	O
of	O
these	O
systems	O
incorporate	O
a	B-General_Concept
"	O
keying	O
"	O
system	O
that	O
will	O
prevent	O
plugging	O
a	B-General_Concept
(	O
newer	O
)	O
lower-rated	O
power	O
supply	O
into	O
an	O
older	O
system	O
(	O
which	O
needs	O
more	O
power	O
)	O
.	O
</s>
<s>
The	O
initial	O
motherboard	B-Device
version	O
was	O
known	O
as	O
"	O
Xenon	B-Device
"	O
and	O
used	O
a	B-General_Concept
203watt	O
power	O
supply	O
,	O
and	O
lacked	O
an	O
HDMI	B-Protocol
video	O
port	O
.	O
</s>
<s>
Later	O
models	O
had	O
an	O
improved	O
GPU	B-Device
heatsink	O
.	O
</s>
<s>
The	O
"	O
Zephyr	O
"	O
revision	O
was	O
a	B-General_Concept
redesigned	O
motherboard	B-Device
adding	O
the	O
HANA	O
and	O
HDMI	B-Protocol
,	O
but	O
used	O
the	O
same	O
90nm	O
CPU	B-Device
as	O
the	O
Xenon	B-Device
.	O
</s>
<s>
It	O
did	O
however	O
,	O
move	O
to	O
an	O
80nm	O
GPU	B-Device
and	O
eDRAM	O
,	O
with	O
an	O
improved	O
GPU	B-Device
heatsink	O
.	O
</s>
<s>
The	O
"	O
Falcon	O
"	O
incorporated	O
a	B-General_Concept
newer	O
65nm	B-Algorithm
CPU	B-Device
,	O
and	O
required	O
less	O
power	O
so	O
it	O
came	O
packaged	O
with	O
a	B-General_Concept
175watt	O
power	O
supply	O
.	O
</s>
<s>
"	O
Jasper	O
"	O
(	O
released	O
late	O
November	O
2008	O
)	O
used	O
both	O
a	B-General_Concept
65nm	B-Algorithm
CPU	B-Device
and	O
GPU	B-Device
,	O
as	O
well	O
as	O
16	O
,	O
256	O
or	O
512MB	O
of	O
on-board	O
flash	O
memory	O
.	O
</s>
<s>
(	O
This	O
was	O
to	O
help	O
run	O
a	B-General_Concept
then-recent	O
Dashboard	O
update	O
.	O
</s>
<s>
Without	O
the	O
addition	O
of	O
this	O
internal	O
memory	O
,	O
a	B-General_Concept
hard	B-Device
disk	I-Device
drive	I-Device
or	O
memory	B-Device
card	I-Device
is	O
required	O
.	O
)	O
</s>
<s>
The	O
"	O
Kronos	O
"	O
revision	O
is	O
a	B-General_Concept
minor	O
upgrade	O
of	O
the	O
"	O
Jasper	O
"	O
,	O
moving	O
to	O
a	B-General_Concept
new	O
"	O
Kronos1	O
"	O
GPU	B-Device
with	O
a	B-General_Concept
65nm	B-Algorithm
eDRAM	O
,	O
and	O
adding	O
a	B-General_Concept
new	O
Ring	O
of	O
Light/RF	O
board	O
called	O
"	O
XFreedom	O
"	O
.	O
</s>
<s>
Due	O
to	O
all	O
dies	O
now	O
being	O
at	O
65nm	B-Algorithm
,	O
the	O
GPU	B-Device
heatsink	O
returned	O
to	O
the	O
original	O
one	O
used	O
on	O
the	O
"	O
Xenon	B-Device
"	O
.	O
</s>
<s>
Xbox	B-Operating_System
360	I-Operating_System
S	O
introduced	O
a	B-General_Concept
new	O
motherboard	B-Device
version	O
called	O
"	O
Trinity	O
"	O
with	O
a	B-General_Concept
45nm	O
integrated	O
CPU	B-Device
,	O
GPU	B-Device
,	O
and	O
eDRAM	O
.	O
</s>
<s>
In	O
2011	O
a	B-General_Concept
second	O
model	O
of	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
S	O
motherboard	B-Device
has	O
been	O
released	O
known	O
as	O
"	O
Corona	O
"	O
which	O
integrates	O
the	O
HANA	O
chip	O
into	O
the	O
southbridge	B-Device
chip	O
,	O
and	O
used	O
either	O
the	O
traditional	O
16MB	O
NAND	O
,	O
or	O
a	B-General_Concept
4GB	O
"	O
Phison	O
"	O
eMMC	O
.	O
</s>
<s>
"	O
Corona	O
"	O
was	O
used	O
in	O
both	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
S	O
and	O
Xbox	B-Operating_System
360	I-Operating_System
E	O
.	O
In	O
August	O
2014	O
,	O
the	O
"	O
Winchester	O
"	O
model	O
was	O
released	O
,	O
with	O
a	B-General_Concept
new	O
XCGPU	O
.	O
</s>
<s>
Later	O
models	O
had	O
an	O
improved	O
GPU	B-Device
heatsink.Zephyr90	O
nm80/90	O
nm80/90	O
nm203	O
WApril	O
2007Redesigned	O
motherboard	B-Device
.	O
</s>
<s>
Introduced	O
HDMI	B-Protocol
port	O
and	O
HANA	O
chip	O
.	O
</s>
<s>
Introduced	O
80	O
nm	O
GPU	B-Device
and	O
either	O
80	O
nm	O
or	O
90	O
nm	O
eDRAM	O
(	O
except	O
initial	O
models	O
)	O
.	O
</s>
<s>
Improved	O
GPU	B-Device
heatsink.Falcon65	O
nm80	O
nm80	O
nm175	O
WSeptember	O
2007Introduced	O
65	O
nm	O
CPU	B-Device
,	O
Different	O
CPU	B-Device
heatsink.Opus65	O
nm80	O
nm80	O
nm175	O
WJuly	O
2008Sometimes	O
used	O
as	O
a	B-General_Concept
replacement	O
for	O
Xenon	B-Device
motherboards	B-Device
which	O
were	O
sent	O
to	O
Microsoft	O
for	O
RROD	O
repair	O
.	O
</s>
<s>
Same	O
as	O
Falcon	O
,	O
without	O
HDMI.Jasper65	O
nm65	O
nm80	O
nm150	O
WNovember	O
2008Introduced	O
65	O
nm	O
GPU	B-Device
.	O
</s>
<s>
Introduced	O
new	O
"	O
XFreedom	O
"	O
RF-module	O
,	O
new	O
Kronos1	O
GPU	B-Device
revision	O
.	O
</s>
<s>
Return	O
to	O
original	O
GPU	B-Device
heatsinkTrinity45	O
nm	O
(	O
combined	O
chip	O
)	O
65	O
nm135	O
WJune	O
2010Motherboard	O
redesign	O
used	O
in	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
S	O
.	O
Combined	O
CPU/GPU	O
into	O
XCGPU	O
.	O
</s>
<s>
Some	O
versions	O
had	O
a	B-General_Concept
4	O
GB	O
daughterboard.Corona45	O
nm	O
(	O
combined	O
chip	O
)	O
65	O
nm120	O
WAugust	O
2011No	O
more	O
HANA	O
chip	O
.	O
</s>
<s>
Includes	O
both	O
Xbox	B-Operating_System
360	I-Operating_System
S	O
and	O
E	O
versions	O
.	O
</s>
<s>
The	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
features	O
three	O
USB	O
2.0	O
ports	O
(	O
two	O
on	O
the	O
front	O
,	O
one	O
on	O
the	O
back	O
)	O
.	O
</s>
<s>
The	B-Operating_System
Xbox	I-Operating_System
360S	I-Operating_System
,	O
however	O
,	O
has	O
five	O
USB	O
2.0	O
ports	O
(	O
two	O
on	O
the	O
front	O
,	O
three	O
in	O
the	O
back	O
)	O
along	O
with	O
a	B-General_Concept
dedicated	O
Kinect	O
port	O
.	O
</s>
<s>
The	O
Xbox	B-Protocol
360E	O
has	O
four	O
ports	O
(	O
two	O
on	O
the	O
front	O
,	O
two	O
on	O
the	O
back	O
)	O
and	O
a	B-General_Concept
dedicated	O
Kinect	O
port	O
.	O
</s>
<s>
These	O
are	O
used	O
for	O
connection	O
of	O
accessories	O
such	O
as	O
wired	O
controllers	B-Device
,	O
the	O
wireless	O
networking	O
adapter	O
,	O
the	O
Xbox	B-Device
Live	I-Device
Vision	I-Device
camera	I-Device
and	O
USB	O
storage	O
devices	O
.	O
</s>
<s>
Although	O
the	O
number	O
of	O
wired	O
controllers	B-Device
is	O
limited	O
by	O
the	O
number	O
of	O
ports	O
,	O
up	O
to	O
four	O
may	O
be	O
used	O
through	O
the	O
use	O
of	O
a	B-General_Concept
USB	O
hub	O
.	O
</s>
<s>
The	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
also	O
features	O
wireless	O
connectivity	O
of	O
accessories	O
via	O
a	B-General_Concept
proprietary	O
2.4GHz	O
radio	O
system	O
.	O
</s>
<s>
This	O
is	O
mainly	O
used	O
to	O
connect	O
the	O
official	O
wireless	O
controllers	B-Device
,	O
but	O
is	O
also	O
used	O
for	O
other	O
devices	O
such	O
as	O
the	O
wireless	O
racing	O
wheel	O
and	O
wireless	B-Device
headsets	I-Device
.	O
</s>
<s>
With	O
the	O
exception	O
of	O
some	O
rhythm	O
game	O
controllers	B-Device
,	O
and	O
the	O
Fanatec	O
CSR	O
wheel	O
,	O
this	O
wireless	O
connectivity	O
is	O
limited	O
to	O
first-party	O
Microsoft	O
accessories	O
.	O
</s>
<s>
The	O
console	O
can	O
connect	O
to	O
Xbox	B-Protocol
Live	O
over	O
the	O
Internet	O
through	O
a	B-General_Concept
variety	O
of	O
networking	O
interfaces	O
.	O
</s>
<s>
Original	O
style	O
consoles	O
also	O
have	O
two	O
front-mounted	O
memory	B-Device
card	I-Device
slots	I-Device
for	O
the	O
system	O
's	O
proprietary	O
Memory	O
Unit	O
.	O
</s>
<s>
These	O
can	O
be	O
used	O
to	O
transfer	O
profile	O
and	O
game	O
data	O
from	O
one	O
Xbox	B-Operating_System
360	I-Operating_System
to	O
another	O
.	O
</s>
<s>
The	O
"	O
Arcade	O
"	O
model	O
formerly	O
came	O
with	O
a	B-General_Concept
256MB	O
Memory	O
Unit	O
,	O
but	O
with	O
the	O
Jasper	O
motherboard	B-Device
revision	O
of	O
September	O
2008	O
,	O
the	O
"	O
Arcade	O
"	O
model	O
began	O
to	O
include	O
256MB	O
of	O
built-in	O
flash	O
memory	O
.	O
</s>
<s>
The	O
memory	B-Device
card	I-Device
slots	I-Device
were	O
replaced	O
with	O
USB	O
ports	O
on	O
the	O
newer	O
Xbox	B-Operating_System
360	I-Operating_System
S	O
models	O
.	O
</s>
<s>
The	O
Universal	O
Media	O
Remote	O
can	O
be	O
used	O
to	O
control	O
several	O
functions	O
of	O
the	O
console	O
,	O
including	O
the	O
Windows	B-Device
Media	I-Device
Center	I-Device
functions	O
if	O
connected	O
to	O
the	O
network	O
.	O
</s>
<s>
It	O
communicates	O
with	O
the	O
console	O
via	O
infrared	O
through	O
a	B-General_Concept
receiver	O
port	O
on	O
the	O
front	O
of	O
the	O
console	O
.	O
</s>
<s>
All	O
standard	O
controllers	B-Device
for	O
the	O
system	O
feature	O
a	B-General_Concept
2.5mm	O
headset	B-Device
jack	I-Device
to	O
allow	O
the	O
use	O
of	O
wired	O
headsets	O
for	O
voice	O
chatting	O
.	O
</s>
<s>
The	O
2.5mm	O
jack	B-Device
can	O
also	O
accept	O
the	O
chatpad	O
accessory	O
.	O
</s>
<s>
The	O
physical	O
outline	O
of	O
the	O
original	O
style	O
Xbox	B-Operating_System
360	I-Operating_System
is	O
and	O
is	O
similar	O
in	O
form	O
factor	O
to	O
its	O
predecessor	O
.	O
</s>
<s>
It	O
is	O
slightly	O
slimmer	O
in	O
every	O
dimension	O
and	O
is	O
slightly	O
concave	O
,	O
while	O
the	O
original	O
Xbox	B-Protocol
was	O
noticeably	O
convex	O
.	O
</s>
<s>
It	O
comes	O
as	O
standard	O
in	O
either	O
black	O
or	O
white	O
,	O
with	O
other	O
colors	O
available	O
as	O
special	B-Architecture
editions	I-Architecture
.	O
</s>
<s>
The	O
original	O
case	O
has	O
a	B-General_Concept
concaveness	O
to	O
it	O
;	O
Astro	O
Studios	O
 '	O
president	O
Brett	O
Lovelady	O
said	O
that	O
part	O
of	O
this	O
was	O
to	O
keep	O
an	O
"	O
X	B-Device
"	O
shape	O
to	O
the	O
console	O
when	O
looked	O
at	O
from	O
the	O
front	O
,	O
while	O
it	O
also	O
served	O
to	O
help	O
with	O
cooling	O
the	O
system	O
components	O
,	O
as	O
the	O
narrower	O
section	O
helped	O
the	O
console	O
to	O
"	O
inhale	O
"	O
more	O
air	O
,	O
particularly	O
when	O
placed	O
in	O
the	O
vertical	O
orientation	O
.	O
</s>
<s>
In	O
June	O
2010	O
a	B-General_Concept
redesign	O
of	O
the	O
console	O
,	O
known	O
as	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
S	O
,	O
was	O
announced	O
.	O
</s>
<s>
It	O
comes	O
as	O
standard	O
in	O
either	O
matte	O
or	O
glossy	O
black	O
;	O
like	O
its	O
predecessor	O
,	O
other	O
colors	O
are	O
available	O
as	O
special	B-Architecture
editions	I-Architecture
.	O
</s>
<s>
The	O
front	O
of	O
the	O
console	O
features	O
a	B-General_Concept
"	O
ring	O
of	O
light	O
"	O
that	O
displays	O
four	O
illuminated	O
quadrants	O
in	O
either	O
red	O
or	O
green	O
(	O
Some	O
special	B-Architecture
editions	I-Architecture
replaced	O
the	O
green	O
for	O
blue	O
)	O
.	O
</s>
<s>
When	O
the	O
lights	O
turn	O
red	O
,	O
the	O
console	O
has	O
encountered	O
an	O
error	B-Error_Name
,	O
with	O
the	O
number	O
of	O
sectors	O
illuminated	O
informing	O
the	O
user	O
what	O
category	O
the	O
error	B-Error_Name
falls	O
into	O
.	O
</s>
<s>
Since	O
the	O
redesign	O
of	O
the	O
console	O
removed	O
the	O
red	O
LEDs	O
,	O
this	O
error	B-Error_Name
reporting	O
system	O
is	O
no	O
longer	O
used	O
.	O
</s>
<s>
The	O
original	O
Xbox	B-Operating_System
360	I-Operating_System
weighs	O
approximately	O
,	O
about	O
350grams	O
heavier	O
than	O
the	O
new	O
Xbox	B-Protocol
.	O
</s>
<s>
The	O
console	O
uses	O
an	O
external	O
power	O
supply	O
with	O
a	B-General_Concept
10A/100	O
–	O
120V	O
or	O
5A/220	O
-230V	O
(	O
AC	O
)	O
input	O
and	O
DC	O
output	O
rated	O
at	O
203/175/150/130/115W	O
(	O
depending	O
on	O
revision	O
)	O
.	O
</s>
<s>
An	O
estimated	O
2W	O
of	O
power	O
are	O
used	O
while	O
the	O
older	O
versions	O
of	O
console	O
are	O
in	O
standby	O
mode	O
giving	O
a	B-General_Concept
yearly	O
usage	O
of	O
approximately	O
17.5kWh	O
.	O
</s>
<s>
Xbox	B-Operating_System
360	I-Operating_System
power	O
supplies	O
are	O
designed	O
with	O
keys	O
in	O
the	O
plug	O
to	O
be	O
forwards	O
,	O
but	O
not	O
backwards	O
compatible	O
.	O
</s>
<s>
For	O
example	O
,	O
a	B-General_Concept
203	O
watt	O
supply	O
would	O
fit	O
and	O
work	O
on	O
a	B-General_Concept
175	O
watt	O
console	O
,	O
but	O
not	O
the	O
other	O
way	O
around	O
.	O
</s>
