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IBM PS/2 (Model 40 SLC) - Technical Specifications

General information
Machine type: 8540-050, 055
Announce date: April, 1992

Excerpt from the original announcement letter;

"The Personal System/2(R) (PS/2(R)) Model 40 SLC complements and enhances the PS/2 family of systems with the integration of the IBM 386SLC 20MHz microprocessor. The PS/2 Model 40 SLC features 8KB of internal cache as well as the internal cache controller and offers up to 88% performance improvement over the Model 40 SX, which it replaces. The Model 40 SLC provides 2MB of system board memory (expandable to 16MB on planar), 3.5-inch direct access storage device (DASD) options, five slots and four bays and 16-bit video graphics array (VGA). "

System characteristics
Microprocessor: IBM 80386slc (32 bit)
Clock speed: 20 MHz, 0 wait states
Coprocessor: socket for optional i80387 math coprocessor
Type of BUS: 16-bit (AT BUS)
Total number of expansion slots: 5
Ports: PS/2 keyboard, PS/2 mouse, serial, parallel, VGA

Memory
Min/Max on system board: 2/16MB
Type of memory:
RAM: DRAM (PS/2 72 pin SIMM) 85ns w. parity. (3 sockets, 2 available)
ROM: ?
Cache: 8kb L1

Physical description
Power supply: 197w, 110/220VAC switchable
Weight: 11.9 kg
Dimensions (HxWxD): (169 x 440 x 394mm)

Mass storage
Drive bays: 4 (1 x 3.5", 3 x 5.25")
Floppy Disk
Size: 3.5 inch slim-height
Capacity: 2.88MB media sense
Hard disk
Size: 3.5 inch half-height
Capacity: 0MB (model 050), 80MB (model 055)
Access time: 17ms
Interface: AT-IDE

Display
Size:
Display type:
Graphics modes supported: Integrated 16-bit VGA Display adapter

320x200, 256 colours
640x480, 16 colours

Keyboard
Type: 101 key enhanced or 122 key host connect

Software
Operating system: IBM PC DOS Versions 5.0, OS/2 Version 2.0, or higher

Configurations
Various memory, diskette drive, hard drive, monitor, and keyboard configurations including;
8535-050 - PS/2 Model 40 SLC 2MB/0MB
8535-055 - PS/2 Model 40 SLC 2MB/80MB

Options
IBM Personal System/2 8MB Memory Module Kit-80ns 1401 6450129
IBM Personal System/2 4MB Memory Module Kit-80ns 3933 87F9977
IBM Personal System/2 1MB Memory Module Kit-85ns 5212 6450603
IBM Personal System/2 2MB Memory Module Kit-85ns 5213 6450604
IBM Personal System/2 2MB Memory Module Kit-80ns 5214 6450608
IBM Personal System/2 2MB Memory Module Kit-70ns 0129 6450902
IBM Personal System/2 4MB Memory Module Kit-70ns 0128 6450128
IBM Personal System/2 8MB Memory Module Kit-70ns 5116 6450130