Asus AP2400R - Manual (Page 29)

29 AP2400R Hardware Reference Guide
Cooling Fans
CPU Blower
The blower shroud extends to the CPU area on the motherboard. The CPU
blower module rests on the PCI cage and power supply with hooks on each
side.
Shroud
CPU Blower Hooks
Hooks
CPU1 CPU2
8cm PCI Cage Fan
Expansion Card Fan
Besides the CPU blower, a cooling fan is mounted on the PCI cage to
decrease the temperature of PCI cards. Fan/thermal failures can be
monitored through the LEDs on the front panel and/or by optional software.
Underside of CPU Blower