HP Compaq dx6050 MT Reference Manual page 119

Removal and Replacement Procedures— Slim Tower (ST) Chassis
6. If you are removing an expansion card from a PCI 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 then pull it in toward the center of the chassis to release it from
the chassis frame. Be sure not to scrape the card against other components.
Service Reference Guide, d300, dx6050 319865-008 7–13