ASRock Q1900DC-ITX User Manual - Page 19
Front Panel Audio Header, Serial ATA3 Connectors
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Q1900DC-ITX Serial ATA2 Connectors (SATA2_1: see p.5, No. 10) (SATA2_2: see p.5, No. 7) SATA2_2 SATA2_1 These two SATA2 connectors support SATA data cables for internal storage devices with up to 3.0 Gb/s data transfer rate. Serial ATA3 Connectors (SATA3_A1: see p.5, No. 16) (SATA3_A2: see p.5, No. 18) SATA3_A2 SATA3_A1 These two SATA3 connectors support SATA data cables for internal storage devices with up to 6.0 Gb/s data transfer rate. USB 2.0 Header (9-pin USB1_2) (see p.5, No. 4) DUMMY GND +B -B USB_PWR GND +A -A USB_PWR 1 Besides two USB 2.0 ports on the I/O panel, there is one header on this motherboard. This USB 2.0 header can support two ports. USB 3.0 Header (19-pin USB3_1_2) (see p.5, No. 5) 1 Dummy IntA_PB_D+ IntA_PB_D- GND IntA_PB_SSTX+ IntA_PB_SSTX- GND IntA_PB_SSRX+ IntA_PB_SSRX- Vbus IntA_PA_D+ IntA_PA_DGND IntA_PA_SSTX+ IntA_PA_SSTXGND IntA_PA_SSRX+ IntA_PA_SSRXVbus Besides two USB 3.0 ports on the I/O panel, there is one header on this motherboard. This USB 3.0 header can support two ports. Front Panel Audio Header (9-pin HD_AUDIO1) (see p.5, No. 19) GND PRESENCE# MIC_RET OUT_RET 1 OUT2_L J_SENSE OUT2_R MIC2_R MIC2_L This header is for connecting audio devices to the front audio panel. English 15
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