IBM PS/1, Hardware Maintenance Service

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One cable for hard disk drives and one cable for diskette drives are pro-
vided in all models. Some earlier models have a two-connector hard
disk drive cable.
Diskette Drives—AT-type
3.5-inch 1.44MB Slimline diskette drive in all models
5.25-inch 1.2MB Half-High diskette drive (not in all models).
Hard Disk Drives
Hard disk drives are 3.5-inch Slimline IDE AT drives.
85MB with 32K of “look-ahead” cache and 17 ms average access
time
129MB with 64K of “look-ahead” cache and 17 ms average access
time
170MB with 32K of “look-ahead” cache and 16 ms average access
time
211MB with 64K of “look-ahead” cache and 15 ms average access
time
253MB with 64K of “look-ahead” cache and 13 ms average access
time
340MB with 64K of “look-ahead” cache and 13 ms average access
time.
Displays
VGA
– 14-inch, 0.39-mm.
– Supports VGA modes.
Note: Does not support high-resolution graphic modes.
– Includes its own power switch.
– Four user controls: horizontal centering, vertical centering, bright-
ness, and contrast.
– Connector for a detachable grounded 3-wire power cord.
– 1.5-m attached signal cable.
– Low-voltage Northern Hemisphere and high-voltage Northern and
Southern Hemisphere versions.
SVGA
– 14-inch, 0.28-mm or 0.39-mm dot pitch tri-synch.
– Supports VGA, 800x600, and 1024x768 (i) modes.
– Includes its own power switch.
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