IBM PS/2 (Model 56 SX/56 LS) - Technical specifications


IBM Personal System/2 Model 56 SX/LS

General information
Machine type: 8556
Announce date: October, 1991

Excerpt from the original announcement letter;

"The IBM Personal System/2(R) Models 56 SX and 56 LS are three-slot, two-bay Micro Channel (R systems designed to provide a small footprint, low price general business and Local Area Network (LAN) workstation solution. The PS/2 Models 56 SX and 56 LS are positioned between the Model 55 SX/LS and Model 57 SX of the low end Micro Channel (R) systems. The PS/2 Model 56 LS system units (24X) are shipped with all of the standard features of the Model 56 SX with the following exception: no DASD devices are installed in this medialess system, but a 16/4MBbps Token Ring network card with RIPL (24X) occupies one of three slots. The PS/2 Model 56 LS is fully upgradable to the Model 56 SX configurations. "

System Characteristics
Microprocessor: Intel 80386sx (32 bit)
Clock speed: 20 Mhz
Coprocessor: socket for optional 80387
Type of BUS: 16-bit Micro Channel
Total number of expansion slots: 3 (desktop case)
Ports: PS/2 keyboard, PS/2 mouse, serial, parallel, VGA,

Memory
Min/Max on system board: 4/16MB
Type of memory:
RAM: DRAM (PS/2 72-pin SIMM) 70ns parity checked (3 sockets)
ROM: 128kb
Cache: 0kb L1, 0kb L2

Physical description
Power supply: 118w, 110-220VAC auto sense
Weight: 10.9 kg (24.0 lbs)
Dimensions (HxWxD): (115 x 360 x 395mm)

Mass storage
Drive bays: 2 ( 5.25" (2 accessible))
Floppy Disk
Size: 3.5 inch slim-height
Capacity: 2.88MB media sense
Hard disk
Size: 3.5 inch half-height
Capacity: 0MB (24x), 40MB (043), 80MB (045), 160MB (049),
Access time: 8.3ms
Interface: SCSI (integrated SCSI controller)

Display
Size:
Display type: Optional Analog CRT
Graphics modes supported: Integrated VGA Display adapter

320x200, 256 colours
640x480, 16 colours

Keyboard
Type: 101 key enhanced, 122 key host connect

Software
Operating system: IBM PC DOS Versions 5.0 or higher

Configurations
Various memory, diskette drive, hard drive, monitor, and keyboard configurations including;
8556-043 - System Unit 386sx20, 4MB, 40MB, 2.88, 101 keyboard
8556-045 - System Unit 386sx20, 4MB, 80MB, 2.88, 101 keyboard
8556-049 - System Unit 386sx20, 4MB, 160MB, 2.88, 101 keyboard
8556-24X - System Unit 386sx20, 4MB, Token Ring 16/4, 101 keyboard (medialess workstation)

Options
System board memory Feature Number Part Number
IBM Personal System/2 2MB Memory Module Kit-70ns 129 6450902
IBM Personal System/2 4MB Memory Module Kit-70ns 128 6450128
IBM Personal System/2 8MB Memory Module Kit-70ns 5116 6450130
DASD
IBM Personal System/2 Micro Channel SCSI Adapter 1005 6451109
IBM Personal System/2 Micro Channel SCSI Adapter with Cache 1018 6451110
IBM Personal System/2 1.44MB 1-Inch High Diskette Drive 30 6451130
IBM Personal System/2 2.88MB 1-Inch High Diskette Drive 1106 6451106
IBM Personal System/2 60MB SCSI Fixed Disk Drive(B,D) 1049 6451049
IBM Personal System/2 80MB SCSI Fixed Disk Drive (D) 1045 6451045
IBM Personal System/2 120MB SCSI Fixed Disk Drive(B,D) 1050 6451050
IBM Personal System/2 160MB SCSI Fixed Disk Drive (D) 1046 6451046
IBM Personal System/2 320MB SCSI Fixed Disk Drive (D) 1108 6451234
IBM Personal System/2 400MB SCSI Fixed Disk Drive (D) 1081 6451235
IBM Personal System/2 Micro Channel SCSI Adapter External Terminator (for F/N 1018) 1039 6451039
IBM Personal System/2 3.5-inch Rewritable Optical Drive 162 6450162
IBM Personal System/2 CD-ROM Drive 1113 6451113
IBM Personal System/2 5.25-inch Slim High Diskette Drive 1066 6451066
IBM Personal System/2 5.25-inch Diskette Adapter/A(A) 1007 6451007
IBM Personal System/2 SCSI Fixed Disk Drive Kit D (B) 1119 6451120
IBM Personal System/2 External CD-ROM Drive 3510-001 3510001
IBM Personal System/2 External Storage Enclosure for SCSI Devices 3511-003 3511003
IBM Personal System/2 4869-001 5.25-inch 360KB External Diskette Drive (A) 4869001
IBM Personal System/2 4869-002 5.25-inch 1.2MB External Diskette Drive (A) 4869002
IBM Personal System/2 Upgrade Kit for Diskette Drives 5106 6451127
IBM PS/2 Model 56 LS Upgrade kit for SCSI Devices 5108 6451129
Communications
IBM Personal System/2 Leased Line Modem 1862 26F1862
IBM Personal System/2 Adapter/A for Ethernet Networks 1091 6451091
IBM Personal System/2 Dual Async Adapter/A 1014 6451013
The IBM 3270 Connection 2000 74F3465
System/370(TM) Channel Emulator/A 3205 1674899
IBM System 36/38 Workstation Emulation Adapter 6279 69X6279
IBM PC Network Baseband Adapter/A 1223 1501223
IBM PC Network Adapter II/A (J) 1222 1501222
IBM PC Network Adapter II/A -- Frequency 2 (J) 5647 96X5647
IBM PC Network Adapter II/A -- Frequency 3 (J) 5648 96X5648
IBM Token Ring Network Adapter/A 4790 69X8138
IBM Token Ring Network Adapter/A -- Remote Program Load 8881 25F8887
IBM Token Ring Network 16/4 Adapter/A 1133 16F1133
IBM Token Ring Network 16/4 Busmaster Adapter/A 4041 74F4140
IBM Token Ring Network 16/4 Trace & Performance Adapter/A (H) 5130 74F5130
IBM Personal System/2 300/1200/2400 Internal Modem/A 1755 94X1755
IBM Realtime Interface Co-Processor Multiport/2 (512KB) 6263 09F1897
IBM Realtime Interface Co-Processor Multiport/2 (1MB) 6247 16F1820
IBM Realtime Interface Co-Processor Multiport/2 8 Port RS-232 Interface Board 6265 09F1952
IBM Realtime Interface Co-Processor Multiport/2 8 Port RS-422A Interface Board 6326 15F8852
IBM Realtime Interface Co-Processor Multiport/2 6 Port RS-232C Synchronous Interface Board 6327 15F8861
IBM Realtime Interface Co-Processor Multiport/2 4 Port RS-232 Interface Board 6267 09F1955
IBM Realtime Interface Co-Processor Multiport/2 RS-232/RS-422 Interface Board 6266 09F1958
IBM Realtime Interface Co-Processor Portmaster(TM) Adapter/A (512KB) (J) 6360 53F2601
IBM Realtime Interface Co-Processor Portmaster Adapter/A (1MB) (J) 6364 53F2604
IBM Realtime Interface Co-Processor Portmaster Adapter/A (2MB) (J) 6368 53F2607

Note: Options are no longer available from IBM.


Document ID:  GJAN-43VPE9
Last Modified:  2000-04-13
Copyright © 2000 IBM Corporation


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