Dell Precision YT583 User Manual page 200

12 Rotate the card retainer until it snaps into place.
NOTICE:
cards could cause damage to the equipment.
1 release tab
13 Connect any cables that should be attached to the card.
See the documentation for the card for information about the card's cable
connections.
14 Press the card retention device back into its original position; push it down
until it clicks into place.
200
Adding and Replacing Parts
Do not route card cables behind the cards. Cables routed behind the
2 card retainer
1
2