ASRock H310CM-ITX/ac Quick Installation Guide - Page 21

USB 2.0 Header (9-pin USB_3_4) (see p.1, No. 12) USB 3.1 Gen1 Header (19-pin USB3_3_4) (see p.1, No. 6) DUMMY GND P+4 P-4 USB_PWR There is one USB2.0 header GND on this motherboard. This P+3 USB 2.0 header can support P-3 two ports. USB_PWR 1 Vbus IntA_PA_SSRXIntA_PA_SSRX+ GND IntA_PA_SSTXIntA_PA_SSTX+ GND IntA_PA_DIntA_PA_D+ There is one header on this Vbus IntA_PB_SSRX- motherboard. This USB 3.1 IntA_PB_SSRX+ GND Gen1 header can support IntA_PB_SSTX- two ports. IntA_PB_SSTX+ GND IntA_PB_D- IntA_PB_D+ Dummy 1 Front Panel Audio Header (9-pin HD_AUDIO1) (see p.1, No. 17) GND PRESENCE# MIC_RET OUT_RET This header is for connecting audio devices to the front audio panel. 1 OUT2_L J_SENSE OUT2_R MIC2_R MIC2_L 1. High Definition Audio supports Jack Sensing, but the panel wire on the chassis must support HDA to function correctly. Please follow the instructions in our manual and chassis manual to install your system. 2. If you use an AC'97 audio panel, please install it to the front panel audio header by the steps below: A. Connect Mic_IN (MIC) to MIC2_L. B. Connect Audio_R (RIN) to OUT2_R and Audio_L (LIN) to OUT2_L. C. Connect Ground (GND) to Ground (GND). D. MIC_RET and OUT_RET are for the HD audio panel only. You don't need to connect them for the AC'97 audio panel. E. To activate the front mic, go to the "FrontMic" Tab in the Realtek Control panel and adjust "Recording Volume". English Chassis Speaker Header (4-pin SPEAKER1) (see p.1, No. 16) 18 SPEAKER DUMMY DUMMY +5V 1 Please connect the chassis speaker to this header.