ASRock H55M Quick Installation Guide - Page 22
English, 8 Onboard Headers and Connectors
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2.8 Onboard Headers and Connectors Onboard headers and connectors are NOT jumpers. Do NOT place jumper caps over these headers and connectors. Placing jumper caps over the headers and connectors will cause permanent damage of the motherboard! Serial ATAII Connectors (SATAII_1: see p.2, No. 9) (SATAII_2: see p.2, No. 8) (SATAII_3: see p.2, No. 10) (SATAII_4: see p.2, No. 11) These four Serial ATAII (SATAII) connectors support SATA data cables for internal storage devices. The current SATAII interface allows up to 3.0 Gb/s data transfer rate. SATAII_4 SATAII_2 SATAII_3 SATAII_1 Serial ATA (SATA) Data Cable (Optional) USB 2.0 Headers (9-pin USB10_11) (see p.2 No. 17) (9-pin USB8_9) (see p.2 No. 14) Either end of the SATA data cable can be connected to the SATA / SATAII hard disk or the SATAII connector on this motherboard. 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. (9-pin USB6_7) (see p.2 No. 15) English Print Port Header (25-pin LPT1) (see p.2 No. 24) This is an interface for print port cable that allows convenient connection of printer devices. 22 ASRock H55M Motherboard