Asus H81M-A H81M-A User's Manual - Page 24
CPU and chassis fan connectors 4-pin CPU_FAN, 4-pin CHA_FAN, USB 2.0 connectors 10-1 pin USB910, - e cpu support
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3. 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. CPU_FAN CPU FAN PWM CPU FAN IN CPU FAN PWR GND H81M-A CHA_FAN CHA FAN PWM CHA FAN IN CHA FAN PWR GND H81M-A CPU fan connector Do not forget to connect the fan cables to the fan connectors. Insufficient air flow 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 and chassis fan support the ASUS Fan Xpert feature. 4. USB 2.0 connectors (10-1 pin USB910, USB1112) These connectors are for USB 2.0 ports. Connect the USB module cable to any of these connectors, then install the module to a slot opening at the back of the system chassis. These USB connectors comply with USB 2.0 specifications and supports up to 480Mbps connection speed. USB910 USB1112 USB+5V USB_P10USB_P10+ GND NC USB+5V USB_P12USB_P12+ GND NC USB+5V USB_P9USB_P9+ GND USB+5V USB_P11USB_P11+ GND H81M-A PIN 1 PIN 1 H81M-A USB2.0 connectors Never connect a 1394 cable to the USB connectors. Doing so will damage the motherboard! The USB 2.0 module is purchased separately. 1-16 Chapter 1: Product introduction