IBM PS/2 90 XP 486 Hardware Maintenance Reference page 13

2.3 System Features
The major features of the system are:
Processor board
CMOS RAM
Initial Machine Load (IML)
Basic Input/Output System (BIOS)
Power-on Self-Test (POST)
Video (VGA and XGA) adapter
Serial-port connector
Parallel-port connector
Diskette-drive controller
Keyboard connector
Pointing-device connector.
Subtopics
2.3.1 Processor Boards
2.3.2 CMOS RAM and CMOS RAM Extension
2.3.3 IML, POST, and BIOS
2.3.4 Video
2.3.5 Serial Ports
2.3.6 Parallel Port
2.3.7 Diskette-Drive Controller
2.3.8 Keyboard Connector and Pointing-Device Connector
IBM PS/2 Model 90 XP 486 and 95 XP 486 HMR
System Features
¦ Copyright IBM Corp. 1990, 1992
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