HP TC4400 - Manual (Page 90)

Removal and Replacement Procedures
Maintenance and Service Guide 5–7
5.4 Hard Drive
1. Prepare the tablet PC for disassembly ( Section 5.3 ).
Hard Drive Spare Part Number Information
Hard drives (all 5400 rpm; include cover, frame, and connector)
100-GB
80-GB
60-GB
419124-001
419126-001
419125-001