Toshiba Magnia 3310 - Manual (Page 97)

Installing and Removing Hardware
Memory module
79
7 Remove the exhaust fan unit cables from the motherboard.
Removing the exhaust fan unit cable
8 Turn the screw for securing the exhaust fan unit
counterclockwise to release the lock.
Be sure to turn the screws while holding the fan unit with your
hands to prevent the exhaust fan unit from falling.
Releasing the lock of the exhaust fan unit