HP Pro 3000 SFF Hardware Reference Manual page 19

11. To install a new expansion card, hold the card just above the expansion socket on the system
board then move the card toward the rear of the chassis so that the bottom of the bracket on the
card slides into the small slot on the chassis. Press the card straight down into the expansion socket
on the system board.
Figure 13 Installing an Expansion Card
NOTE: When installing an expansion card, press firmly on the card so that the whole connector
seats properly in the expansion card slot.
12. While holding the expansion card bracket against the chassis, rotate the slot cover lock over the
expansion card brackets and slot covers. Push the slot cover lock down to latch it and secure the
card brackets.
Figure 14 Closing the Slot Cover Lock
13. Connect external cables to the installed card, if needed. Connect internal cables to the system
board, if needed.
14. Replace the computer access panel.
Removing or Installing an Expansion Card 13