Dell Precision YT583 User Manual page 274

1 memory fan (only present on
computers without memory riser
cards)
8 Disconnect the speaker cable from the system board.
9 Disconnect the front fan and the card fan from the system board.
10 Unscrew the two screws that hold the processor and card fan case in place
and lift it away from the computer. These screws help to secure the system
board in place.
274
Adding and Replacing Parts
2 fan support structure
1
2