Dell OptiPlex 740 User's Guide - Page 167
If you are removing the adapter permanently, install a filler bracket in the empty card-slot opening.
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a Check any cables connected to cards through the back-panel openings. Disconnect any cables that will not reach the riser-card cage once they are removed from the computer. b Rotate the riser-card cage handle up and gently pull on the handle and lift the riser-card cage up and away from the computer. 1 2 3 1 riser-card cage 2 handle 3 riser cards (2) 3 Gently lift the release tab on the card retention latch from the inside to pivot the latch open. Pivot the latch until it snaps into the open position. 4 Disconnect the PS/2 serial-port cable from the system board (see "System Board Components" on page 102). 5 Grasp the PS/2 serial-port adapter bracket by its top corners, and ease it out of its connector. 6 If you are removing the adapter permanently, install a filler bracket in the empty card-slot opening. NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer. The brackets also keep dust and dirt out of your computer. 7 Before you close the card retention mechanism, ensure that: • The tops of all cards and filler brackets are flush with the alignment bar. • The notch in the top of the card or filler bracket fits around the alignment guide. 8 Secure the card(s) by closing the card retention latch and snapping it into place. 9 Replace the riser-card cage: Desktop Computer 167