<s>
The	O
PS/2E	B-Device
or	O
Energy	O
(	O
IBM	O
9533	O
)	O
is	O
a	O
member	O
of	O
the	O
IBM	B-Device
Personal	I-Device
System/2	I-Device
family	O
of	O
personal	B-Device
computers	I-Device
(	O
PCs	B-Device
)	O
.	O
</s>
<s>
It	O
was	O
the	O
first	O
Energy	O
Star-compliant	O
PC	O
,	O
consuming	O
very	O
little	O
power	O
relative	O
to	O
other	O
contemporary	O
PCs	B-Device
,	O
and	O
made	O
extensive	O
use	O
of	O
recycled	O
materials	O
in	O
its	O
enclosure	B-General_Concept
.	O
</s>
<s>
The	O
PS/2E	B-Device
featured	O
an	O
IBM	B-Device
486SLC2	I-Device
microprocessor	O
with	O
a	O
16KB	O
L1	B-General_Concept
cache	I-General_Concept
that	O
ran	O
at	O
50MHz	O
on	O
a	O
25MHz	O
system	B-Architecture
bus	I-Architecture
(	O
the	O
processor	O
clock	O
was	O
double	O
that	O
of	O
the	O
system	B-Architecture
bus	I-Architecture
)	O
.	O
</s>
<s>
The	O
processor	O
's	O
performance	O
was	O
dependent	O
on	O
the	O
L1	B-General_Concept
cache	I-General_Concept
containing	O
the	O
required	O
instructions	O
and	O
data	O
;	O
there	O
was	O
no	O
external	O
L2	O
cache	O
on	O
the	O
motherboard	O
like	O
on	O
some	O
other	O
486-based	O
computers	O
.	O
</s>
<s>
It	O
featured	O
an	O
ISA	B-Architecture
bus	I-Architecture
for	O
input/output	B-General_Concept
,	O
which	O
accepted	O
a	O
single	O
ISA	B-Architecture
option	O
adapter	O
with	O
the	O
use	O
of	O
a	O
riser	O
card	O
.	O
</s>
<s>
Depending	O
on	O
the	O
sub-model	O
number	O
,	O
it	O
came	O
supplied	O
with	O
either	O
a	O
special	O
option	O
adapter	O
for	O
four	O
PC	B-Architecture
card	I-Architecture
PCMCIA	B-Architecture
slots	O
,	O
or	O
a	O
network	B-Protocol
interface	I-Protocol
card	I-Protocol
for	O
Ethernet	O
or	O
Token	B-Device
Ring	I-Device
networks	I-Device
for	O
use	O
as	O
a	O
diskless	O
workstation	O
.	O
</s>
<s>
Additional	O
options	O
included	O
several	O
PCMCIA	B-Architecture
cards	I-Architecture
,	O
a	O
color	O
LCD	O
screen	O
,	O
and	O
a	O
color	O
LCD	O
touch-screen	B-Device
with	O
a	O
special	O
version	O
of	O
OS/2	B-Application
.	O
</s>
<s>
The	O
PC	O
borrowed	O
some	O
components	O
from	O
IBM	O
's	O
ThinkPad	B-Operating_System
laptops	B-Device
:	O
including	O
the	O
1.44MB	O
floppy	B-Device
disk	I-Device
drive	I-Device
and	O
the	O
hard	B-Device
disk	I-Device
drive	I-Device
.	O
</s>
<s>
Its	O
enclosure	B-General_Concept
was	O
composed	O
of	O
recycled	O
plastics	O
,	O
and	O
was	O
designed	O
to	O
be	O
easily	O
recycled	O
at	O
the	O
end	O
of	O
its	O
service	O
life	O
.	O
</s>
<s>
The	O
PS/2E	B-Device
featured	O
a	O
full-sized	O
internal	O
PC	O
speaker	O
,	O
two	O
SIMM	O
sockets	O
,	O
and	O
an	O
extended	O
bank	O
of	O
memory	O
soldered	O
directly	O
to	O
the	O
motherboard	O
.	O
</s>
<s>
It	O
featured	O
1MB	O
of	O
video	O
memory	O
for	O
the	O
onboard	O
XGA-2	O
graphics	O
adapter	O
,	O
which	O
was	O
attached	O
to	O
the	O
ISA	B-Architecture
bus	I-Architecture
instead	O
of	O
the	O
usual	O
MCA	B-Device
bus	I-Device
.	O
</s>
<s>
Like	O
all	O
Personal	B-Device
System/2	I-Device
computers	O
,	O
if	O
a	O
change	O
in	O
hardware	O
is	O
performed	O
,	O
the	O
configuration	O
must	O
be	O
updated	O
with	O
the	O
use	O
of	O
the	O
reference	O
diskette	B-Device
(	O
for	O
example	O
changing	O
the	O
memory	O
size	O
)	O
.	O
</s>
