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10Loosen the retaining thumbscrew securing the board support tray to the right side of the chassis.
Retaining thumbscrew
11Slide the board support tray toward the front of the chassis slightly to disengage it from the
12Using the handle at the bottom of the board support tray, pull the back edge of the system board (the edge against the back panel) out of the chassis.
82Replacing and Adding System Components