HP Compaq dc7100 DT Reference Manual page 94

Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis
7. If you are removing an expansion card from a standard expansion socket, hold the card at
each end and carefully rock it back and forth until the connectors pull free from the socket.
Lift the expansion card straight up to release it from the chassis frame. Be sure not to scrape
the card against other components.
Before removing an installed expansion card, disconnect any cables that may be attached to the
expansion card.
6–14 361288-003 Service Reference Guide, dc7100