ASRock Fatal1ty 990FX Killer Quick Installation Guide - Page 28
Infrared Module Header
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CPU Fan Connectors (4-pin CPU_FAN1) (see p.1, No. 3) (3-pin CPU_FAN2) (see p.1, No. 4) FAN_SPEED_CONTROL CPU_FAN_SPEED +12V GND 1 2 3 4 GND +12V CPU_FAN_SPEED This motherboard provides a 4-Pin CPU fan (Quiet Fan) connector. If you plan to connect a 3-Pin CPU fan, please connect it to Pin 1-3. ATX Power Connector (24-pin ATXPWR1) (see p.1, No. 7) ATX 12V Power Connector (8-pin ATX12V1) (see p.1, No. 2) SLI/XFIRE Power Connector (4-pin SLI/XFIRE_ PWR1) (see p.1, No. 23) Infrared Module Header (5-pin IR1) (see p.1, No. 24) 12 24 1 13 8 5 4 1 IRTX +5VSB DUMMY 1 GND IRRX This motherboard provides a 24-pin ATX power connector. To use a 20-pin ATX power supply, please plug it along Pin 1 and Pin 13. This motherboard provides an 8-pin ATX 12V power connector. To use a 4-pin ATX power supply, please plug it along Pin 1 and Pin 5. Please connect this connector with a hard disk power connector when two graphics cards are installed on this motherboard. This header supports an optional wireless transmitting and receiving infrared module. English 24