ASRock Q1900-ITX User Manual - Page 19
Front Panel Audio Header, Serial ATA2 Connectors
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Q1900-ITX Serial ATA2 Connectors (SATA2_1: see p.5, No. 9) (SATA2_2: see p.5, No. 6) 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. 15) (SATA3_A2: see p.5, No. 16) 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) 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) IntA_P_D+ IntA_P_DGND IntA_P_SSTX+ IntA_P_SSTXGND IntA_P_SSRX+ IntA_P_SSRXVbus 1 Vbus IntA_P_SSRXIntA_P_SSRX+ GND IntA_P_SSTXIntA_P_SSTX+ GND IntA_P_DIntA_P_D+ ID 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. 18) This header is for connecting audio devices to the front audio panel. English 15