IBM A21M, A22P, A22M, A21P, A20M, MT 2631 manual Feature Description

		Product overview
Feature	Description
Processor	A21p
	v	Mobile Intel® Pentium® III processor at
		850 MHz featuring Intel® SpeedStep™
		technology
	A22m
	v	Mobile Intel® Pentium® III processor at
		800 MHz featuring Intel® SpeedStep™
		technology
	v	Mobile Intel® Pentium® III processor at
		850 MHz featuring Intel® SpeedStep™
		technology
	v	Mobile Intel® Pentium® III processor at
		900 MHz featuring Intel® SpeedStep™
		technology
	v	Mobile Intel® Pentium® III processor at
		1 GHz featuring Intel® SpeedStep™
		technology
	A22p
	v	Mobile Intel® Pentium® III processor at
		1 GHz featuring Intel® SpeedStep™
		technology
Bus architecture	PCI Bus
Memory (standard)	A20m/p
	v 64 MB (on the system board)
	v 128 MB (on the system board)
	A21m/p
	v 64 MB (on the system board)
	v 128 MB (on the system board)
	v	64 MB (64 MB SO-DIMM × 1)
	v	128 MB (128 MB SO-DIMM × 1)
	A22m/p
	v	64 MB (64 MB SO-DIMM × 1)
	v	128 MB (128 MB SO-DIMM × 1)
Memory (optional)	64 MB, 128 MB, or 256 MB DIMM card
	(maximum of 512 MB)
CMOS RAM	114 bytes + 128 bytes
Display	v	12.1-inch, 16M colors, SVGA (800× 600
		resolution) TFT color LCD
	v 14.1-inch, 16M colors, XGA (1024×		768
		resolution) TFT color LCD
	v 15.0-inch, 16M colors, XGA (1024×		768
		resolution) TFT color LCD
	v 15.0-inch, 16M colors, SXGA+
		(1400× 1050 resolution) TFT color LCD
	v 15.0-inch, 16M colors, UXGA
		(1600× 1200 resolution) TFT color LCD

(continued)

42ThinkPad A20m/p, A21m/p, A22m/p