ASRock B75M-DGS R2.0 User Guide - Page 12
Front Panel Audio Header - manual
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USB 2.0 Headers (9-pin USB4_5) (see p.2, No. 19) (9-pin USB6_7) (see p.2, No. 18) Besides four default USB 2.0 ports on the I/O panel, there are two USB 2.0 headers on this motherboard. Each USB 2.0 header can support two USB 2.0 ports. USB 3.0 Header (19-pin USB3_2_3) (see p.2, No. 7) Vbus IntA_P0_SSRXIntA_P0_SSRX+ GND IntA_P0_SSTXIntA_P0_SSTX+ GND IntA_P0_DIntA_P0_D+ Vbus IntA_P1_SSRXIntA_P1_SSRX+ GND IntA_P1_SSTXIntA_P1_SSTX+ GND IntA_P1_DIntA_P1_D+ DUMMY Besides two default USB 3.0 ports on the I/O panel, there is one USB 3.0 header on this motherboard. This USB 3.0 header can support two USB 3.0 ports. 1 Infrared Module Header (5-pin IR1) (see p.2, No. 24) IRTX +5VSB DUMMY 1 GND IRRX This header supports an optional wireless transmitting and receiving infrared module. Front Panel Audio Header (9-pin HD_AUDIO1) (see p.2, No. 22) GND PRESENCE# MIC_RET OUT_RET 1 OUT2_L J_SENSE OUT2_R MIC2_R MIC2_L This is an interface for front panel audio cable that allows convenient connection and control of audio devices. 1. High Definition Audio supports Jack Sensing, but the panel wire on the chassis must support HDA to function correctly. Please follow the instruction in our manual and chassis manual to install your system. 2. If you use AC'97 audio panel, please install it to the front panel audio header as below: A. Connect Mic_IN (MIC) to MIC2_L. B. Connect Audio_R (RIN) to OUT2_R and Audio_L (LIN) to OUT2_L. 12 ASRock B75M-DGS R2.0 Motherboard English