ASRock M3N78D FX Quick Installation Guide - Page 18
Front Panel Audio Header - tv
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USB 2.0 Headers (9-pin USB10_11) (see p.2 No. 15) (9-pin USB8_9) (see p.2 No. 16) (9-pin USB6_7) (see p.2 No. 14) Besides four default USB 2.0 ports on the I/O panel, there are three USB 2.0 headers on this motherboard. Each USB 2.0 header can support two USB 2.0 ports. Chassis Intrusion Header (2-pin CI1) (see p.2 No. 27) Internal Audio Connectors (4-pin CD1) (CD1: see p.2, No. 26) Front Panel Audio Header (9-pin HD_AUDIO1) (see p.2, No. 23) This motherboard supports CASE OPEN detection feature that detects if the chassis cover has been removed. This feature requires a chassis with chassis intrusion detection design. 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. This is an interface for the 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: 18 ASRock M3N78D FX Motherboard English