Asus NCCH-DR NCCH-DR User Manual English Version - Page 42
CPU fan pin selection 3-pin FM_CPU1, FM_CPU2
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2 . CPU fan pin selection (3-pin FM_CPU1, FM_CPU2) These jumpers allow you to connect either a 3-pin or a 4-pin CPU fan cable plug to the CPU fan connectors (CPU_FAN1, CPU_FAN2). Set these jumpers to pins 1-2 if you are using a 3-pin fan cable plug, or to pins 2-3 if you are using a 4-pin plug. NCCH-DR NCCH-DR FM_CPU Setting FM_CPU2 2 1 DC mode (Default) 3 2 PWM FM_CPU1 12 23 DC mode (Default) PWM 3 . USB device wake-up (3-pin USBPW12, USBPW34) Set these jumpers to +5V to wake up the computer from S1 sleep mode (CPU stopped, DRAM refreshed, system running in low power mode) using the connected USB devices. Set to +5VSB to wake up from S3 and S4 sleep modes (no power to CPU, DRAM in slow refresh, power supply in reduced power mode). USBPW12 12 23 +5V (Default) +5VSB USBPW34 12 23 NCCH-DR +5V (Default) NCCH-DR USB device wake-up +5VSB • The USB device wake-up feature requires a power supply that can provide 500mA on the +5VSB lead for each USB port; otherwise, the system would not power up. • The total current consumed must NOT exceed the power supply capability (+5VSB) whether under normal condition or in sleep mode. 2-22 Chapter 2: Hardware information