<s>
The	O
Power	B-Device
Macintosh	I-Device
5500	I-Device
is	O
a	O
personal	B-Device
computer	I-Device
designed	O
,	O
manufactured	O
,	O
and	O
sold	O
by	O
Apple	O
Computer	O
from	O
February	O
1997	O
to	O
March	O
1998	O
.	O
</s>
<s>
Like	O
the	O
Power	B-Device
Macintosh	I-Device
5260	I-Device
and	O
5400	B-Device
that	O
preceded	O
it	O
,	O
the	O
5500	O
is	O
an	O
all-in-one	B-Device
design	O
,	O
built	O
around	O
a	O
PowerPC	O
603ev	O
processor	B-General_Concept
operating	O
at	O
225	O
,	O
250	O
or	O
275	O
megahertz	O
(	O
MHz	O
)	O
.	O
</s>
<s>
Apple	O
originally	O
produced	O
the	O
Power	B-Device
Macintosh	I-Device
5500	I-Device
for	O
the	O
educational	O
market	O
as	O
a	O
replacement	O
for	O
the	O
previous	O
year	O
's	O
Power	B-Device
Macintosh	I-Device
5400	I-Device
.	O
</s>
<s>
It	O
is	O
the	O
last	O
All-In-One	B-Device
from	O
Apple	O
to	O
be	O
housed	O
in	O
the	O
Power	B-Device
Macintosh	I-Device
5200	I-Device
LC	I-Device
's	O
form-factor	O
;	O
its	O
replacement	O
,	O
the	O
Power	B-Device
Macintosh	I-Device
G3	I-Device
All-In-One	I-Device
,	O
introduced	O
a	O
significantly	O
different	O
design	O
.	O
</s>
<s>
External	O
ports	O
:	O
External	O
ports	O
include	O
two	O
LocalTalk/GeoPort	O
serial	O
ports	O
,	O
a	O
DB-25	B-Protocol
SCSI	B-Architecture
port	O
,	O
an	O
ADB	B-Device
port	I-Device
,	O
a	O
stereo	O
sound	O
input	O
port	O
,	O
a	O
built-in	O
microphone	O
above	O
the	O
monitor	O
,	O
stereophonic	O
sound	O
output	O
ports	O
,	O
a	O
headphone	O
jack	O
on	O
the	O
front	O
,	O
a	O
stereo	O
miniphone	O
jack	O
on	O
the	O
back	O
.	O
</s>
<s>
Memory	O
:	O
Unlike	O
the	O
5400	B-Device
,	O
the	O
5500	O
has	O
no	O
soldered	O
on-board	O
memory	O
.	O
</s>
<s>
pin	O
,	O
60	O
ns	O
or	O
faster	O
,	O
2K	O
refresh	O
rate	O
,	O
5-volt	O
buffered	O
EDO	O
DIMMs	O
)	O
,	O
which	O
can	O
support	O
up	O
to	O
64	O
MB	O
each	O
,	O
for	O
a	O
total	O
maximum	O
memory	O
of	O
128	O
MB	O
,	O
8	O
less	O
than	O
the	O
5400	B-Device
.	O
</s>
<s>
Cache	B-General_Concept
:	O
The	O
processor	B-General_Concept
makes	O
use	O
of	O
32	O
kilobytes	O
(	O
KB	O
)	O
of	O
L1	O
cache	B-General_Concept
,	O
with	O
an	O
option	O
for	O
a	O
256	O
or	O
512KB	O
L2	O
cache	B-General_Concept
(	O
the	O
latter	O
being	O
available	O
only	O
on	O
the	O
275MHz	O
model	O
)	O
cache	B-General_Concept
operating	O
at	O
the	O
stock	O
50MHz	O
bus	O
speed	O
.	O
</s>
<s>
Hard	O
disk	O
:	O
The	O
5500	O
includes	O
a	O
larger	O
ATA	B-Protocol
hard	O
disk	O
than	O
its	O
predecessor	O
.	O
</s>
<s>
The	O
computer	O
came	O
stock	O
with	O
a	O
2gigabyte	O
(	O
GB	O
)	O
hard	O
disk	O
,	O
but	O
the	O
275MHz	O
model	O
came	O
with	O
a	O
4GB	O
drive	O
;	O
a	O
faster	O
SCSI	B-Architecture
CD-ROM	O
drive	O
(	O
12x	O
in	O
early	O
models	O
and	O
24x	O
in	O
the	O
top-end	O
)	O
.	O
</s>
<s>
An	O
optional	O
video	O
connector	O
kit	O
is	O
available	O
which	O
adds	O
a	O
DB-15	B-Protocol
output	O
port	O
to	O
the	O
back	O
;	O
the	O
output	O
of	O
this	O
display	O
mirrors	O
the	O
main	O
screen	O
,	O
suitable	O
for	O
presentations	O
.	O
</s>
<s>
Floppy	O
disk	O
:	O
The	O
5500	O
includes	O
Apple	O
's	O
standard	O
SuperDrive	B-Device
1.44	O
MB	O
floppy	O
drive	O
.	O
</s>
<s>
Expansion	O
slots	O
:	O
The	O
5500	O
has	O
one	O
PCI	B-Protocol
card	I-Protocol
slot	O
.	O
</s>
<s>
Operating	O
system	O
:	O
The	O
5500	O
supports	O
System	B-Application
Software	I-Application
versions	O
7.5.5	O
through	O
9.1	O
–	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
is	O
not	O
officially	O
supported	O
on	O
this	O
machine	O
.	O
</s>
<s>
However	O
,	O
it	O
can	O
be	O
run	O
with	O
XPostFacto	B-Application
but	O
is	O
not	O
recommended	O
,	O
due	O
to	O
the	O
5500	O
's	O
lack	O
of	O
a	O
G3	B-Device
processor	B-General_Concept
and	O
RAM	O
ceiling	O
of	O
128	O
MB	O
.	O
</s>
<s>
In	O
the	O
general	O
case	O
,	O
128	O
MB	O
of	O
RAM	O
is	O
the	O
minimum	O
required	O
for	O
OS	B-Operating_System
X	I-Operating_System
to	O
run	O
(	O
a	O
G3	B-Device
iMac	B-Device
can	O
run	O
OS	B-Operating_System
X	I-Operating_System
with	O
this	O
amount	O
of	O
RAM	O
)	O
,	O
but	O
only	O
on	O
machines	O
with	O
a	O
G3	B-Device
processor	B-General_Concept
.	O
</s>
<s>
Power	B-Device
Macintosh	I-Device
ONE/225	O
:	O
Same	O
as	O
the	O
5500/225	O
,	O
sold	O
in	O
the	O
UK	O
education	O
market	O
,	O
through	O
an	O
agreement	O
with	O
a	O
UK-based	O
company	O
called	O
Xemplar	O
.	O
</s>
