<s>
The	O
Sony	B-Device
U	I-Device
series	I-Device
of	O
subnotebook	B-Device
computers	O
refers	O
to	O
two	O
series	O
of	O
Sony	O
products	O
the	O
PCG-U	O
and	O
the	O
VGN-U	O
.	O
</s>
<s>
The	O
later	O
VGN-U	O
were	O
,	O
at	O
their	O
release	O
,	O
the	O
smallest	O
independent	O
computers	O
running	O
Windows	B-Application
XP	I-Application
and	O
the	O
most	O
powerful	O
high-end	O
subnotebooks	B-Device
at	O
the	O
time	O
.	O
</s>
<s>
Docking	B-Device
station	I-Device
:	O
</s>
<s>
The	O
Pentium-M	B-Architecture
series	O
CPU	O
(	O
1.0GHz	O
,	O
1.1GHz	O
)	O
supports	O
SpeedStep	B-Device
,	O
which	O
allows	O
the	O
processor	O
to	O
slow	O
down	O
when	O
not	O
under	O
load	O
,	O
using	O
less	O
power	O
and	O
prolonging	O
battery	O
life	O
.	O
</s>
<s>
The	O
900MHz	O
Celeron-M	O
does	O
not	O
support	O
SpeedStep	B-Device
,	O
and	O
has	O
only	O
512KB	O
cache	O
.	O
</s>
<s>
Battery	O
life	O
of	O
the	O
Pentium-M	B-Architecture
series	O
is	O
said	O
to	O
be	O
anywhere	O
from	O
30	O
to	O
45	O
minutes	O
over	O
the	O
Celeron-M	O
model	O
as	O
a	O
result	O
of	O
having	O
SpeedStep	B-Device
.	O
</s>
<s>
Connecting	O
an	O
external	O
monitor	O
to	O
the	O
VGA	B-Protocol
port	O
of	O
the	O
docking	B-Device
station	I-Device
enables	O
a	O
maximum	O
resolution	O
of	O
1600x1200x16m	O
.	O
</s>
<s>
The	O
graphics	O
supports	O
display	O
cloning	O
or	O
extended	O
desktop	O
when	O
using	O
an	O
extended	O
monitor	O
,	O
and	O
also	O
supports	O
OpenGL	B-Application
and	O
Direct3D	B-Application
hardware	O
acceleration	O
,	O
with	O
a	O
performance	O
approximating	O
that	O
of	O
a	O
Radeon	B-Device
7000	O
or	O
a	O
GeForce	B-Application
1	O
.	O
</s>
<s>
The	O
compact	O
USB	B-Protocol
keyboard	O
resembles	O
a	O
laptop	O
keyboard	O
.	O
</s>
<s>
Original	O
U50	O
and	O
U70p	O
units	O
had	O
a	O
faulty	O
Synaptics	O
driver	O
which	O
sometimes	O
caused	O
USB	B-Protocol
HID	O
input	O
device	O
conflicts	O
.	O
</s>
<s>
This	O
slot	O
will	O
accommodate	O
a	O
Type-II	O
CompactFlash	B-Device
device	O
,	O
provided	O
there	O
are	O
Windows	B-Application
XP	I-Application
drivers	O
for	O
such	O
a	O
device	O
.	O
</s>
<s>
It	O
will	O
accept	O
all	O
valid	O
CompactFlash	B-Device
memory	O
cards	O
.	O
</s>
<s>
Some	O
memory	O
cards	O
pulled	O
from	O
sealed	O
MP3	O
devices	O
such	O
as	O
iPods	B-Device
have	O
been	O
crippled	O
as	O
so	O
not	O
to	O
be	O
fully	O
compliant	O
as	O
a	O
regular	O
memory	O
card	O
,	O
and	O
may	O
not	O
work	O
.	O
</s>
<s>
The	O
Sony	O
Memory	O
Stick	O
slot	O
is	O
underneath	O
the	O
CompactFlash	B-Device
slot	O
.	O
</s>
<s>
It	O
will	O
accept	O
only	O
Memory	O
Stick	O
memory	O
storage	O
cards	O
;	O
Wi-Fi	O
and	O
Bluetooth	B-Protocol
cards	O
will	O
not	O
work	O
as	O
there	O
are	O
no	O
Windows	B-Application
XP	I-Application
drivers	O
for	O
any	O
such	O
Memory	O
Stick	O
IO	O
devices	O
at	O
this	O
time	O
.	O
</s>
<s>
i.Link	B-Protocol
is	O
Sony	O
's	O
name	O
for	O
IEEE	B-Protocol
1394	I-Protocol
;	O
the	O
port	O
is	O
compatible	O
with	O
4	O
pin	O
FireWire	B-Protocol
cables	O
,	O
and	O
is	O
unpowered	O
.	O
</s>
<s>
6	O
pin	O
firewire	B-Protocol
cables	O
will	O
need	O
an	O
adapter	O
.	O
</s>
<s>
The	O
i.Link	B-Protocol
port	O
on	O
the	O
docking	B-Device
station	I-Device
additionally	O
has	O
a	O
power	O
jack	O
next	O
to	O
the	O
4	O
pin	O
jack	O
,	O
used	O
only	O
for	O
Sony	O
compatible	O
CD	O
and	O
DVD	O
drives	O
.	O
</s>
<s>
All	O
models	O
of	O
the	O
Sony	B-Device
Vaio	I-Device
U	I-Device
series	I-Device
have	O
been	O
discontinued	O
in	O
lieu	O
of	O
the	O
new	O
UX	B-Device
series	I-Device
.	O
</s>
