42
H12DSU-iN User's Manual
Fan Headers
There are eight fan headers on the motherboard. These are 4-pin fan headers; pins 1-3 are
backward compatible with traditional 3-pin fans. The onboard fan speeds are controlled by
Fan Mode in the BMC. When using Fan Mode setting, please use all 4-pin fans.
Fan Header
Pin Definitions
Pin#
Definition
1
Ground (Black)
2
+12V (Red)
3
Tachometer (Yellow)
4
PWM control (Blue)
Headers
Chassis Intrusion
A Chassis Intrusion header is located at JL1 on the motherboard. Attach the appropriate cable
from the chassis to the header to inform you when the chassis is opened.
Chassis Intrusion
Pin Definitions
Pin#
Definition
1
Intrusion Input+
2
Intrusion Input-
Disk-On-Module Power Connector
The Disk-On-Module (DOM) power connectors at JSD1 and JSD2 provide 5V power to a
solid-state DOM storage device connected to one of the SATA ports. See the table below for
pin definitions.
DOM Power
Pin Definitions
Pin#
Definition
1
5V
2
Ground
3
Ground