Dell OptiPlex 755 User Manual page 105

CAUTION:
Some network adapters automatically start the computer when they are connected to a network. To
guard against electrical shock, be sure to unplug your computer from its electrical outlet before installing any
cards.
7 If you are installing a PCI Express x16 card, hold the securing-tab release lever away from the card
connector as you insert the new card into the connector slot.
1 release tab on card-
retention latch
2
card
3 card-edge connector
4
card connector
1
2
3
4
Expansion Cards
105