ASR 9904 contains a single fan tray
Contains twelve axial 88-mm (3.46-in) fans
Maximum weight of the fan tray is 39.7 lb (18.0 kg)
Fan tray secured by one captive screw with guide pins inside the chassis
Provides full redundancy and maintains required cooling if a single fan failure should occur
Contains 12 fans, a controller card, and one front panel status LED indicator
Hot-swappable component; replacement should be completed within 45 seconds at 30°C and 1,800 meters altitude to prevent system shutdown
