Asus AP1600R-S5 - Manual (Page 39)

ASUS AP1600R 1U Rackmount Server 39
Fan cable connections
The fan module numbered 5-6-7-8 (see location in the above
picture) connects to SYSFAN1 connector.
The fan module numbered 9-10-11-12 connects to SYSFAN2
connector.
NOTES
FAN4 (for PCI cards)
* underneath the
bridge board
8
7
6
5
12
11
10
9
FAN1 (for Rear Panel Fan)
SYSFAN1, SYSFAN2
(for the two 4-fan modules)