ASRock G31M-GS User Manual - Page 21

USB 2.0 Headers (9-pin USB6_7) (see p.10 No. 15) (9-pin USB4_5) (see p.10 No. 16) USB_PWR P-7 P+7 GND DUMMY 1 GND P+6 P-6 USB_PWR USB_PWR P-5 P+5 GND DUMMY 1 GND P+4 P-4 USB_PWR Print Port Header (25-pin LPT1) (see p.10 No. 26) AFD# ERROR# PINIT# SLIN# GND 1 SPD7 SPD6 ACK# SPD5 BUSY SPD4 PE SPD3 SLCT SPD2 SPD1 SPD0 STB# 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. This is an interface for print port cable that allows convenient connection of printer devices. Internal Audio Connector (4-pin CD1) (CD1: see p.10 No. 23) CD-L GND GND CD-R This connector allows you to receive stereo audio input CD1 from sound sources such as a CD-ROM, DVD-ROM, TV tuner card, or MPEG card. Front Panel Audio Header (9-pin HD_AUDIO1) (see p.10 No. 21) 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. C. Connect Ground (GND) to Ground (GND). 21