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Chapter 1: Product introduction
6. CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN)
Connect the fan cables to the fan connectors on the motherboard, ensuring that the
black wire of each cable matches the ground pin of the connector.
Do not forget to connect the fan cables to the fan connectors. Insufcient air ow inside
the system may damage the motherboard components. These are not jumpers! Do not
place jumper caps on the fan connectors! The CPU_FAN connector supports a CPU fan of
maximum 1A (12 W) fan power.
Only the 4-pin CPU fan supports the ASUS Fan Xpert 2 feature.
CHA_FAN
CPU_FAN
CPU FAN PWM
CPU FAN IN
CPU FAN PWR
GND
CHA FAN PWM
CHA FAN IN
CHA FAN PWR
GND
H81M-C
H81M-C Fan connectors
5. Intel
®
H81 Serial ATA 3.0Gb/s connector (7-pin SATA3G_1~2)
This connector connects to Serial ATA 3.0 Gb/s hard disk drives via Serial ATA 3.0 Gb/s
signal cables.
• You must install Windows. XP Service Pack 3 or later version before using Serial ATA
hard disk drives.
• When using hot-plug and NCQ, set the SATA Mode Selection item in the BIOS to [AHCI].
GND
RSATA_TXP2
RSATA_TXN2
GND
RSATA_RXN2
RSATA_RXP2
GND
SATA3G_2
GND
RSATA_TXP1
RSATA_TXN1
GND
RSATA_RXN1
RSATA_RXP1
GND
SATA3G_1
H81M-C
H81M-C SATA 3.0Gb/s connectors