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1-38 Service Guide
1.6.22 Hard Disk Drive
Table 1-33 Hard Disk Drive Specifications
Item Specification
Vendor & Model Name IBM DTCA-23240 IBM DTCA-24090
Drive Format
Capacity (GB) 4.09 3.24
Bytes per sector 512 512
Logical heads 16 16
Logical sectors 63 63
Logical cylinders 6304 7944
Physical read/write heads 4
Disks 2
Rotational speed (RPM) 4000 4000
Performance Specifications
Buffer size (KB) 512 512
Interface ATA-2 ATA-2
Data transfer rate (disk-buffer, Mbytes/s) 6.47 ~ 10.45 6.47 ~ 10.45
Data transfer rate (host-buffer, Mbytes/s) 33.3 (Ultra DMA Mode-2) 33.3 (Ultra DMA Mode-2)
DC Power Requirements
Voltage tolerance (V)
5 ± 5%
1.6.23 Keyboard
Table 1-34 Keyboard Specifications
Item Specification
Vendor & Model Name SMK KAS1902-
0211R (English)
SMK KAS1902-
0232R (Germany)
SMK KAS1902-0251R
(Japanese)
Total number of keypads 84 keys 85 keys 88 keys
Windows95 keys Yes, (Logo key /
Application key)
Yes, (Logo key /
Application key)
Yes, (Logo key /
Application key)
External PS/2 keyboard hot plug Yes
Internal & external keyboard
work simultaneously
Yes
Keyboard automatic tilt feature Yes
The keyboard has the option of automatically tilting to a six-degree
angle whenever you open the lid. This feature is set by an keyboard
automatic tilt latch on the rear side of the system unit.