74 FansRemoving the Hard Drive Fan1 Follow the procedures in "Before You Begin" on page 9.2 Remove the computer cover (see "Removing the Computer Cover" onpage 13).3 Remove the card fan cage (see "Removing the Card Fan" on page 69).4 Disconnect the hard drive fan cable from the FAN_HDD connector on themaster I/O board (see "Power Supply Unit (PSU) DC Connector PinAssignments" on page 18).5 Slide the hard drive fan cage out from behind the hard drive bays, then liftit from the computer.1 hard-drive fan 2 hard-drive fan cage12