Dell OptiPlex 740 User's Guide - Page 137
the setting to, group, and change - no sound
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2 1 3 4 1 fully seated card 2 4 bracket caught outside of slot not fully seated card 3 bracket within slot 7 Secure the card(s) by closing the card retention latch and snapping it into place. NOTICE: Do not route card cables over the cards. Cables routed over the cards can prevent the computer cover from closing properly or cause damage to the equipment. 8 Connect any cables that should be attached to the card. 9 Replace the computer cover (see "Replacing the Computer Cover" on page 297). NOTE: See the documentation for the card for information about the card's cable connections. 10 If you installed a sound card: a Enter system setup, select Integrated Audio from the Onboard Devices group, and change the setting to Off (see "System Setup" on page 257). b Connect external audio devices to the sound card's connectors. Do not connect external audio devices to the line-in connector on the back panel of the computer (see "Back-Panel Connectors" on page 99). Desktop Computer 137