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Service Reference Guide, dx7300 433611-001 6–15
Removal and Replacement Procedures— Microtower (MT) Chassis
c. If 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. Pull the expansion card straight up from the socket then away
from the inside of the chassis to release it from the chassis frame. Be sure not to scrape
the card against the other components.
5. If not replacing the old expansion card with a new expansion card, install an expansion slot
cover to close the open slot. Insert the metal slot cover in the opened slot and slide the slot
cover lock down to secure the slot cover in place.
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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.