IBM PS/1 User Manual

J14
J30
Comm B Comm A Conn1
J2
JP6
Conn 2
Battery
CN2
J12
BIOS
(Even)
BIOS
(Odd)
J15J16
JP9
JP61
JP10
SIMM1
SIMM2
SIMM3
SIMM4
SIMM5
SIMM6
SIMM7
SIMM8
JP59
JP24
U29
Bar Code Label
U27
U30
U28
U31
U33
U32
U34
DX
U45
i486SX
U11
U214
JP26
J11
J13
1
25
2
26
2
33
39
120
60
1
61
2
1
34
40
1
1
1
3
3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3 4
1
4
1 5
11
14
15
25
106
1
11
166
12
1
5555
993311226 6 4 4
5
13
Figure 5-5. 486SX 25MHz Level 2 (30-Pin Memory SIMM) System Board
5-10

IBM PS/1 Specifications

General

Processor	Intel 80286 or 80386
Processor Speed	10 MHz (80286)
RAM	1 MB (expandable to 2 MB or more)
Storage	40 MB hard drive
Floppy Drive	3.5" 1.44 MB
Graphics	VGA
Ports	Serial, Parallel, Mouse