Asus H81M-CS User Guide - Page 23

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-CS CHA_FAN GND CHA FAN PWR CHA FAN IN +5V H81M-CS Fan connectors 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 support the ASUS Fan Xpert feature. 4. USB 2.0 connectors (10-1 pin USB910, USB56) 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. USB56 USB910 USB+5V USB_P5USB_P5+ GND NC USB+5V USB_P9USB_P9+ GND NC PIN 1 PIN 1 USB+5V USB_P6USB_P6+ GND USB+5V USB_P10USB_P10+ GND H81M-CS H81M-CS 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. ASUS H81M-CS 1-15