HP EXPANSION BASE 344524-001 - Manual (Page 38)

Removal and Replacement Procedures
Maintenance and Service Guide 5–9
9. Remove the two PM2.0×4.0 screws 1 that secure the upper
chassis to the base enclosure.
10. Swing the top edge of the upper chassis upward 2 to
disengage it from the base enclosure.
11. Lift the upper chassis straight up 3 and remove it.
Removing the upper chassis
Reverse the above procedure to install the upper chassis.