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IBM PS/2 (Model 57 486SLC2) - Technical Specifications

Inside the 9557 (486SLC2)

Inside the 9557 (486SLC3)

picture of Ultimedia M57

General information
Machine type: 9557
Announce date: October, 1992

Excerpt from the original announcement letter;

"The new PS/2(R) 56, 57, Ultimedia and Ultimedia DV M57 486SLC2, are Micro Channel(R) systems designed to complement and enhance the product line. These products provide improvements such as: increased processor speed with the 50/25-MHz 486SLC2 microprocessor, an internal memory cache controller with 16KB memory cache, larger fast hard disks - 104 Million Bytes (MB)(model 0B6) and 212 Million Bytes (MB)(model 0BA, 1BA and 2BA), three (3) total memory sockets with one (1) 8MB 70ns SIMM located in socket 1 leaving two (2) sockets available for expansion up to 16MB on the planner, enhanced IBM Mouse, video provided via the graphics XGA-2 chip set designed to meet the International Organization for Standardization (ISO) requirements (refer to A92-902 and A92-848), a small computer system interface (SCSI) input/output (I/O) interface, enhanced security, two 9-pin Serial ports, and a high speed DMA Parallel port."

System characteristics
Microprocessor: IBM 486slc2 (32 bit)
Clock speed: 50/25 MHz
Coprocessor:
Type of BUS: 16-bit Micro Channel
Total number of expansion slots: 5 (desktop/floor-standing case)
Ports: PS/2 keyboard, PS/2 mouse, 2 DMA serial, DMA parallel, XGA-2, SCSI

Memory
Min/Max on system board: 8/16MB
Type of memory:
RAM: DRAM (PS/2 72-pin SIMM) 70ns parity checked (3 sockets)
ROM: 128kb
Cache: 16kb L1, 0kb L2

Physical description
Power supply: 197w, 110-220VAC auto sense
Weight: 15.9kg (35.0 lbs) (maximum configuration)
Dimensions (HxWxD): (168 x 440 x 394mm)

Mass storage
Drive bays: 4 ( 3 x 5.25" (1 slim-height))
Floppy Disk
Size: 3.5 inch slim-height
Capacity: 2.88MB media sense
Hard disk
Size: 3.5 inch half-height
Capacity: 104MB (0B6), 212MB (0BA)
Access time: 12ms
Interface: SCSI (integrated SCSI controller)

Display
Size:
Display type: Optional Analog CRT
Graphics modes supported: Integrated 32-bit XGA-2 Display adapter

1024x768, 256 colours, 75Hz NI
800x600, 65,536 colours
640x480, 65,536 colours

Keyboard
Type: 101 key enhanced, 122 key host connect, 84 key space saving

Software
Operating system: IBM PC DOS Versions 5.0, 5.00.1 or higher

Configurations
Various memory, diskette drive, hard drive, monitor, and keyboard configurations including;
9557-0B6 - System Unit 486slc2-50, 8MB, 104MB, 2.88, 101 keyboard
9557-0BA - System Unit 386slc2-50, 8MB, 212MB, 2.88, 101 keyboard

Options