IBM Personal System/2 Model 40 SX
| Machine type | 8540-045 |
| Serial | 55-MKY20 |
| Manufacturer | IBM Corp., United Kingdom |
| FCC ID | ANO8540 |
| Date | July 1991 |
Physical description
| Type | Desktop (may be converted to floor standing) (26 JUL 1991 print inside top cvr, 27 JUN 1991 print on drives tray) |
| Dimensions (HxWxD) | 169 x 440 x 394 mm |
| Weight | 12.6 Kg |
| Drive bays | 1 x 3.5", 3 x 5.25", all accessible |
| Power supply | 197 W, 110/220VAC switchable (9127) |
Main board
| BIOS | IBM, Apr. 4, 1991 (26 Kb) |
| Clock | 20 Mhz, 0-2 wait states |
| Processor | Intel 80386SX (32-bit) PQFP |
| Coprocessor | Socket for optional i80387 |
| Memory | 3 sockets for 85ns 72-pin SIMMs (PS/2 type), parity checked (accept faster 70ns SIMMs) |
| Max on system board | 16 Mb (about 15,5 Mb usable) |
| Bus | AT 16-bit |
| Expansion slots | 5 (AT 16-bit), on riser card |
| Video | Integrated 16-bit VGA display adapter |
| Interface | HDD (2 units type IDE/ATAPI), FDD (2 units) |
| Ports | PS/2 keyboard, PS/2 mouse, serial (UART 16450), parallel, VGA |
Cards
| Installed RAM | 1 x 8 Mb 70ns and 2 x 4 Mb 80ns SIMMs on planar (und.) |
| Ethernet | SMC 8013EWC (14-93) ADDITION |
Storage
| Diskette drive | 1.44Mb, 3.5" slim (Alps DFP723, 91-15) |
| Hard disk | Maxtor 7080AI (80 Mb) IDE/ATA, 3.5" slim (03 JUL 1991, cables 27/91) |
| 2nd Hard disk | Maxtor 7040AI (40 Mb) IDE/ATA, 3.5" slim (11 JUN 1991) ADDITION |
Trivia
| Acquisition | Mid-99, free (was in a deposit of dismissed appliances) |
| Condition | Very good, working |
| Installed O.S. | Olivetti MS-DOS 5.00 (Italian) |
| Repairs/modifications | Added ethernet card and second hard drive, replaced existing 2 x 2 Mb memory SIMMs |
| Current status | All hw working |
| Current O.S. | IBM PC-DOS 5.00 (Italian) |
| Spare parts | Almost everything, incl. drives, planar, etc. |
Peripherals: KEYBOARDS, MONITORS, MICES, PRINTERS
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This page was first
published on the web on Nov. 11, 2001 |