HP zx5000 - Manual (Page 118)

Removal and Replacement Procedures
Maintenance and Service Guide 5–11
5.5 Memory Module
1. Prepare the notebook for disassembly (Section 5.3).
2. Turn the notebook upside down with the rear panel
toward you.
Spare Part Number Information
Memory modules
1024-MB
512-MB
256-MB
350238-001
350237-001
370556-001