ASROCK Z170M OC Formula Manual page 5

No. Description
33 USB 2.0 Header (USB3_4)
34 Power LED and Speaker Header (SPK_PLED1)
35 Thunderbolt 3 AIC Connector (TB2)
36 Thunderbolt 2/3 AIC Connector (TB1)
37 Front Panel Audio Header (HD_AUDIO1)
38 CPU Fan Connector (CPU_FAN1)
39 Chassis Fan Connector (CHA_FAN3)
40 Clear CMOS Jumper (CLRMOS1)
Z170M OC Formula
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