ASRock X299M Extreme4 Quick Installation Guide - Page 26
Pin 1 and Pin 5.
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CPU Optional/Water Pump Fan Connector FAN_SPEED This motherboard FAN_VOLTAGE_CONTROL GND FAN_SPEED_CONTROL provides a 4-Pin water (4-pin CPU_OPT/WP) cooling CPU fan (see p.1, No. 7) connector. If you plan to connect a 3-Pin CPU water cooler fan, please connect it to Pin 1-3. ATX Power Connector (24-pin ATXPWR1) (see p.1, No. 9) 12 24 1 13 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. ATX 12V Power Connectors (8-pin ATX12V1) (see p.1, No. 2) (8-pin ATX12V2) (see p.1, No. 3) 8 5 This motherboard provides two 8-pin ATX 12V power connectors. To 4 1 use a 4-pin ATX power supply, please plug it along Pin 1 and Pin 5. TPM Header (17-pin TPMS1) (see p.1, No. 26) 1 PCICLK FRAME PCIRST# LAD3 +3V LAD0 +3VSB GND GND SMB_CLK_MAIN SMB_DATA_MAIN LAD2 LAD1 GND S_PWRDWN# SERIRQ# GND This connector supports Trusted Platform Module (TPM) system, which can securely store keys, digital certificates, passwords, and data. A TPM system also helps enhance network security, protects digital identities, and ensures platform integrity. Thunderbolt AIC 1 Connector (5-pin TB1) (see p.1, No. 21) Please connect a Thunderbolt™ add-in card (AIC) to this connector via the GPIO cable. English 24