<s>
The	O
IBM	B-Device
PS/2	I-Device
Note	I-Device
and	I-Device
PS/note	I-Device
are	O
a	O
series	O
of	O
notebooks	B-Device
from	O
the	O
PS/2	B-Device
line	O
by	O
IBM	O
.	O
</s>
<s>
It	O
was	O
announced	O
in	O
March	O
1992	O
,	O
half	O
a	O
year	O
prior	O
to	O
the	O
release	O
of	O
the	O
first	O
ThinkPad	B-Operating_System
,	O
the	O
IBM	B-Device
ThinkPad	I-Device
700	I-Device
.	O
</s>
<s>
After	O
the	O
departure	O
of	O
Bob	O
Lawten	O
from	O
IBM	O
,	O
the	O
team	O
at	O
IBM	O
had	O
little	O
development	O
direction	O
after	O
the	O
IBM	B-Device
PS/2	I-Device
L40	I-Device
SX	I-Device
.	O
</s>
<s>
James	O
Cannavino	O
pushed	O
for	O
the	O
new	O
notebook	B-Device
series	O
,	O
which	O
fell	O
behind	O
schedule	O
.	O
</s>
<s>
The	O
N45	O
SL	O
,	O
N51	O
SX	O
and	O
N51	O
SLC	O
were	O
announced	O
on	O
the	O
same	O
day	O
as	O
the	O
IBM	B-Device
PS/2	I-Device
(	O
color	O
laptop	B-Device
)	O
CL57	O
SX	O
.	O
</s>
<s>
During	O
this	O
time	O
there	O
was	O
a	O
distinction	O
between	O
notebooks	B-Device
and	O
laptops	B-Device
,	O
where	O
the	O
former	O
are	O
A4	O
sized	O
and	O
the	O
latter	O
are	O
larger	O
.	O
</s>
<s>
The	O
notebooks	B-Device
were	O
modeled	O
after	O
the	O
PS/55	B-Device
Note	I-Device
which	O
was	O
released	O
by	O
IBM	O
in	O
Japan	O
in	O
April	O
1991	O
.	O
</s>
<s>
The	O
PS/2	B-Device
Model	O
N33	O
SX	O
(	O
also	O
known	O
as	O
PS/2	B-Device
note	I-Device
N33	O
SX	O
)	O
was	O
the	O
first	O
notebook-sized	O
computer	O
from	O
IBM	O
which	O
was	O
announced	O
in	O
1991	O
.	O
</s>
<s>
It	O
has	O
a	O
9.5	O
"	O
16-greyscale	O
VGA	O
LCD	O
(	O
640x480	O
)	O
,	O
a	O
1.44MB	O
floppy	B-Device
,	O
expansion	O
ports	O
and	O
a	O
40MB	O
or	O
80MB	O
HDD	O
,	O
and	O
weighs	O
.	O
</s>
<s>
The	O
PS/2	B-Device
Model	O
N51	O
SX	O
(	O
or	O
PS/2	B-Device
Note	I-Device
N51	O
SX	O
)	O
was	O
a	O
low-end	O
mainstream	O
notebook	B-Device
,	O
which	O
contained	O
a	O
slower	O
version	O
of	O
the	O
typical	O
386SX	O
found	O
in	O
other	O
notebooks	B-Device
.	O
</s>
<s>
The	O
PS/2	B-Device
Model	O
N51	O
SLC	O
(	O
or	O
PS/2	B-Device
Note	I-Device
N51	O
SLC	O
)	O
was	O
based	O
on	O
IBM	O
their	O
368SLC	B-Device
.	O
</s>
<s>
This	O
model	O
has	O
a	O
PS/55	B-Device
note	I-Device
sibling	O
.	O
</s>
<s>
The	O
PS/note	B-Device
N45	O
SL	O
was	O
priced	O
at	O
$	O
2,045	O
and	O
contains	O
a	O
25MHz	O
386SL	O
.	O
</s>
<s>
It	O
had	O
2MB	O
RAM	O
and	O
a	O
80	O
or	O
120MB	O
HDD	O
and	O
was	O
equipped	O
with	O
only	O
6-row	O
keyboard	O
without	O
dedicated	O
navigation	O
block	O
,	O
the	O
similar	O
layout	O
as	O
a	O
low-end	O
ThinkPad	B-Device
300	I-Device
laptop	B-Device
.	O
</s>
<s>
The	O
PS/note	B-Device
182	O
and	O
PS/note	B-Device
E82	O
was	O
equipped	O
with	O
80386SL	O
CPU	O
,	O
PS/note	B-Device
N82	O
was	O
equipped	O
with	O
80386SX	O
and	O
released	O
in	O
1992	O
.	O
</s>
<s>
This	O
line	O
has	O
a	O
7-row	O
keyboard	O
layout	O
and	O
similar	O
to	O
next-year	O
PS/note	B-Device
425	O
model	O
case	O
(	O
but	O
with	O
gray	O
case	O
color	O
and	O
without	O
TrackPoint	B-Device
)	O
.	O
</s>
<s>
The	O
PS/note	B-Device
425/425C	O
are	O
identical	O
to	O
the	O
ThinkPad	B-Device
350/350C	I-Device
.	O
</s>
<s>
In	O
March	O
1994	O
,	O
it	O
was	O
reported	O
that	O
IBM	O
would	O
consolidate	O
the	O
PS/note	B-Device
series	O
into	O
the	O
ThinkPad	B-Device
300	I-Device
series	O
.	O
</s>
<s>
In	O
1994	O
,	O
the	O
ThinkPad	B-Device
360	I-Device
series	O
was	O
released	O
.	O
</s>
