HP Pavilion a400 HP Pavilion Desktop PC - (English) Users Guide PAV SEA/ANZ/IN - Page 147
installing add-in cards
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installing add-in cards At some point, you may want to add a PCI or AGP card to the computer to accommodate a new component, such as a scanner, or to upgrade an existing card. WARNING: Do not overload the system by installing add-in cards that draw excessive current. The system is designed to provide 2 amps (average) of +5 V power for each board/card in the computer. The total +5 V current draw in a fully loaded system (one with all add-in card slots filled) must not exceed the total number of slots multiplied by 2 amps. To add or replace an add-in card: 1 Turn off the computer and all peripherals. 2 Disconnect the modem/telephone cable. 3 Disconnect the power cord and all other attached cables (such as the keyboard, mouse, and monitor). 4 Remove the side panel (see "removing the side panel" on page 131). 5 Gently lay the computer on its side. 6 To prepare an empty card slot for a new card, loosen the screw of the expansion slot cover of the empty slot (E). Remove the expansion slot cover of the empty slot. E WARNING: Be careful of the sharp edges on the expansion slot cover. upgrading and servicing the pc (2) 139