IBM Personal System/2 Model 95 XP 486

More photographs of this machine here

Type 8595-AJ9
Serial 55-A9888
Manufacturer IBM United Kingdom Ltd.
Date April 1992 (-8 APR. 1992 stamp on bottom of case)

Physical description

Type Tower
Dimensions (HxWxD) 503 x 203 (223 incl. base) x 510 mm
Weight 22 Kg (with one HDD)
Drive bays 2 x 3.5" half-height, 1 x 5.25" half-height, 2 x 5,25" full-height (all but one accessible)
Power supply 194 W, 110-220VAC manual voltage switch (DAT: 12/92, cables WK 8/92)

Main board

Chipset/Manufacturer IBM (planar id FF6F)
Bus Micro Channel (MCA) 32-bit
Memory 8 sockets for 70ns 72-pin SIMMs (PS/2 type), parity checked (also accept slower 80/85ns SIMMs)
Max on system board 64 Mb (8 x 8 Mb)
Expansion slots 8 x 32-bit (2 w. video ext., 6 available), one 64-bit for Processor complex (proprietary)
Interface FDD (2 units)
Ports PS/2 keyboard, PS/2 mouse, buffered serial (UART 16550A), parallel


Type Type-1 complex (*)
BIOS IBM, Oct. 1, 1990 (sticker on BIOS chip 23/03/92)
Processor Intel 80486DX-25MHz (32-bit) PGA
Coprocessor Integraded on 486DX
Ext. Cache Optional 256 Kb cache card
Max Memory 64 Mb (8 x 8 Mb) (*)
Installed RAM 2 x 8 Mb 70ns and 4 x 2 Mb 70ns SIMMs (the latter 9148), tot. 24 Mb
SCSI Controller IBM 32-bit PS/2 bus master SCSI adapter/A w. 512 Kb cache (id 8EFF) (sticker 10/12/91)
Video 32-bit XGA display adapter (1024x768, 16 colours; 640x480, 256 colours, id FFDA, sticker 20/01/92)


Diskette drive 1.44 Mb, 3.5" half-height (Alps DFR723, 91-52, cable 12/92)
Hard disk Model WDS-3160 (160 Mb), SCSI, 3.5" half-height
2nd Hard disk Model WDS-3160 (160 Mb), SCSI, 3.5" half-height ADDITION


Acquisition Jan. '03, gift, was in a deposit of dismissed appliances
Condition Very good, setup needed
Installed O.S. None
Modifications Removed token-ring adapter and 3270 emulation card, added 2 x 8 Mb memory SIMMs (it had 16 Mb only)
Current status All hw working
Current O.S. OS/2 2.0 (Italian)
Spare parts Almost everything, incl. drives and power supply


(*) Existing processor complex can be changed with a newer one (Type-2, 3, or 4, CPUs up to Pentium-90), supporting up to 256 Mb of RAM. With a Type-1 complex SIMMs must be installed in pairs.


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This page was first published on the web on Mar. 10, 2003
Last revised Oct. 26, 2004