Toshiba Magnia 3310 - Manual (Page 102)

Installing and Removing Hardware
Memory module 84
4 Turn the screws for securing the exhaust fan duct
counterclockwise to release the lock.
NOTE: When a 3.06 GHz CPU module is mounted, no
exhaust fan is attached. Steps 4 and 5 are not required.
Releasing the lock of exhaust fan duct
5 Slide the exhaust fan duct toward the rear of the server, pull it
and remove it from the server.
Removing the exhaust fan duct
6 If expansion cards have been installed, remove them according
to the procedure.