Asus F1A55 R2.0 F1A55 R2.0 User's Manual - Page 36
Internal connectors
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11. USB 2.0 ports 3 and 4. These two 9-pin Universal Serial Bus (USB) ports are for USB 2.0/1.1 devices. 12. Optical S/PDIF Out port. This port connects an external audio output device via an optical S/PDIF cable. 13. USB 2.0 ports 5 and 6. These two 4-pin Universal Serial Bus (USB) ports are for USB 2.0/1.1 devices. 14. PS/2 Keyboard port (purple). This port is for a PS/2 keyboard. 1.8.2 Internal connectors 1. Power, CPU and chassis fan connectors (3-pin PWR FAN, 4-pin CPU_FAN, and 4-pin CHA_FAN1/2) 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 F1A55 R2.0 CHA_FAN1 CHA_FAN2 GND CHA FAN PWR CHA FAN IN CHA FAN DC Mode PWR_FAN GND +12V Rotation CHA FAN DC Mode CHA FAN IN CHA FAN PWR GND F1A55 R2.0 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 2A (24 W) fan power. • Only the CPU_FAN and CHA_FAN1/2 connectors support the ASUS Fan Xpert feature. • If you install two VGA cards, we recommend that you plug the rear chassis fan cable to the motherboard connector labeled CHA_FAN1/2 for better thermal environment. 1-24 Chapter 1: Product introduction