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4.On the rear of the computer, a slot cover lock secures the expansion card brackets in place.
Remove the screw from the slot cover lock then slide the slot cover lock up to remove it from the
Figure 7-8 Opening the Slot Cover Lock
5.Before installing an expansion card, remove the expansion slot cover or the existing expansion
NOTE:Before removing an installed expansion card, disconnect any cables that may be attached
to the expansion card.
a.If you are installing an expansion card in a vacant socket, you must use a flatblade screwdriver
to pry out the metal shield on the rear panel that covers the expansion slot. Be sure to remove
the appropriate shield for the expansion card you are installing.
Figure 7-9 Removing an Expansion Slot Cover
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b.If you are removing a PCI Express x1 card, hold the card at each end and carefully rock it
back and forth until the connectors pull free from the socket. Be sure not to scrape the card
against the other components.
Figure 7-10 Removing a PCI Express x1 Expansion Card
c.If you are removing a PCI Express x16 card, pull the retention arm on the back of the expansion
socket away from the card and carefully rock the card back and forth until the connectors pull
free from the socket. Be sure not to scrape the card against the other components.
Figure 7-11 Removing a PCI Express x16 Expansion Card
6.Store the removed card in anti-static packaging.
7.If you are not installing a new expansion card, install an expansion slot cover to close the open
Expansion Cards 39
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CAUTION:After removing an expansion card, you must replace it with a new card or expansion
slot cover for proper cooling of internal components during operation.
8.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 7-12 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.
9.Replace the slot cover lock and secure it in place with the screw that was previously removed.
Figure 7-13 Securing the Expansion Cards and Slot Covers
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10.Connect external cables to the installed card, if needed. Connect internal cables to the system
board, if needed.
11.Reconfigure the computer, if necessary. Refer to the Computer Setup (F10) Utility Guide for
instructions on using Computer Setup.
Always follow good cable management practices when working inside the computer.
●Keep cables away from major heat sources like the heatsink.
●Do not jam cables on top of expansion cards or memory modules. Printed circuit cards like these
are not designed to take excessive pressure on them.
●Some flat ribbon cables come prefolded. Never change the folds on these cables.
●Never bend a SATA data cable tighter than a 30 mm (1.18 in) radius.
●Never crease a SATA data cable.
●Do not rely on components like the drive cage, power supply, or computer cover to push cables
down into the chassis. Always position the cables to lay properly by themselves.
When removing the power supply power cable from the P1 connector on the system board, always
follow these steps:
1.Squeeze on the top of the retaining latch attached to the cable end of the connector (1).
2.Grasp the cable end of the connector and pull it straight up (2).
CAUTION:Always pull the connector - NEVER pull on the cable. Pulling on the cable could
damage the cable and result in a failed power supply.
Cable Management 41
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System board connectors are color-coded to make it easier to find the proper connection.
Connector NameConnector ColorDescription
ATX1WhitePower supply, 24-pin
PWR1WhitePower supply, 4-pin
CPU_FAN1WhiteHeat sink fan
JAUD1YellowFront I/O audio
JUSB1WhiteFront I/O USB
J1394_1RedFront I/O 1394 connector
JUSB2WhiteMedia card reader
SATA1dark bluePrimary hard drive
SATA2whitePrimary optical drive
SATA3light blueSecond hard drive
SATA4 orange Second optical drive
42 Chapter 7 Removal and Replacement Procedures Microtower (MT) Chassis