GA-E7AUM-DS2H Motherboard - 26 -
3/4) CPU_FAN/SYS_FAN (Fan Headers)
The motherboard has a 4-pin CPU fan header (CPU_FAN) and a 4-pin (SYS_FAN) system fan
header. Most fan headers possess a foolproof insertion design. When connecting a fan cable, be
sure to connect it in the correct orientation (the black connector wire is the ground wire). The
motherboard supports CPU/system fan speed control, which requires the use of a CPU/system
fan with fan speed control design. For optimum heat dissipation, it is recommended that a system
fan be installed inside the chassis.
CPU_FAN
1
SYS_FAN
Pin No. Definition
1 GND
2 Speed Control
3 Sense
4 +5V
SYS_FAN:
Pin No. Definition
1 GND
2 +12V / Speed Control
3 Sense
4 Speed Control
CPU_FAN:
• Be sure to connect fan cables to the fan headers to prevent your CPU and system from
overheating. Overheating may result in damage to the CPU or the system may hang.
• These fan headers are not configuration jumper blocks. Do not place a jumper cap on the
headers.
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5) FDD (Floppy Disk Drive Connector)
This connector is used to connect a floppy disk drive. The types of floppy disk drives supported
are: 360 KB, 720 KB, 1.2 MB, 1.44 MB, and 2.88 MB. Before connecting a floppy disk drive, be
sure to locate pin 1 of the connector and the floppy disk drive cable. The pin 1 of the cable is
typically designated by a stripe of different color.
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