Cpu, Cpu Optional, Water Pump, And Chassis Fan Connectors; Serial Port Connector (10-1 Pin Com) - Asus 970 PRO GAMING/AURA Manual

2. CPU, CPU optional, Water pump, and chassis fan connectors (4-pin CPU_FAN,
4-pin CPU_OPT, 4-Pin W_PUMP, 4-pin CHA_FAN1-3)
black wire of each cable matches the ground pin of the connector.
3.

Serial port connector (10-1 pin COM)

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Chapter 1: Product Introduction