IBM Personal System/2 CL57 SX - Product Description

1.0 Product Description
The IBM
(*)
Personal System/2
(*)
Model CL57 SX (hereafter called Model
CL57 SX) is a laptop-size computer, with a color liquid crystal display
(LCD), that uses the IBM Micro Channel
(*)
architecture. The Model CL57
SX operates on rechargeable batteries as well as on an external power
source. The features of the Model CL57 SX include:
¯ Security: power-on password and keyboard password
¯ System board:
- 20-MHz 80386SX microprocessor
- 80387SX math coprocessor socket
- Minimum of 2MB (MB equals 1 048 576 bytes) random access memory
(RAM) on the system board, up to 16MB expandability with
integrated circuit dynamic RAM (IC DRAM) cards.
- Complementary metal-oxide semiconductor (CMOS) RAM with a
real-time clock and an 8KB CMOS RAM (KB equals 1024 bytes)
extension, to store configuration and status information
- Read-only memory basic input/output system (ROM BIOS)
- Diskette-drive controller
- Hard disk drive (fixed disk drive) with system partition supported
- Serial connector
- Parallel connector
- System expansion connector
- Keyboard controller
- External input device connector
- Suspend and resume functions
- Optional communication adapter slot for:
Internal data/fax modem
Secondary serial adapter.
¯ Display Control Card:
- Video Graphics Array (VGA) with Liquid Crystal Display (LCD)
controller
- LCD panel connector
- External display connector
¯ A maximum 640 by 480 PELs color LCD panel with a back light
¯ External power-supply device:
AC adapter, automatically switches to the 90 - 137 V ac or the 180 -
265 V ac range, 50 or 60 Hz.
¯ 84, 85, or 89-key keyboard
¯ Integrated trackball
¯ Speaker with a volume control.
(*) Trademark of the International Business Machines
Corporation.
Subtopics
1.1
Security
1.2
System Board Features
1.3
VGA with LCD Controller
IBM PS/2 Model CL57 SX HMR
Product Description
_ Copyright IBM Corp. 1991
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