Toshiba Magnia 3310 - Manual (Page 88)

Installing and Removing Hardware
Cooling fan 70
NOTE: After removing the spacer, store it in a safe place.
9 Insert the redundant exhaust fan module until the eject lever of
the exhaust fan module is locked.
Inserting the redundant exhaust fan module
10 Connect the redundant exhaust module cable to the
motherboard.
The standard exhaust fan module is connected to the terminal
FAN1 of the motherboard.
The redundant exhaust fan module must be connected to the
terminal FAN1-R.
Connecting the redundant exhaust fan module cable
Eject lever