ASRock A55 Pro Quick Installation Guide - Page 19

2.7 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 ATA2 Connectors (SATA_1: see p.2, No. 8) SATA_1 (SATA_2: see p.2, No. 9) (SATA_3: see p.2, No. 16) (SATA_4: see p.2, No. 17) (SATA_5: see p.2, No. 20) (SATA_6: see p.2, No. 19) SATA_2 SATA_3 SATA_4 These six Serial ATA2 (SATA2) connectors support SATA data cables for internal storage devices. The current SATA2 interface allows up to 3.0 Gb/s data transfer rate. SATA_5 SATA_6 Serial ATA (SATA) Data Cable (Optional) Either end of the SATA data cable can be connected to the SATA / SATAII hard disk or the SATAII connector on this motherboard. USB 2.0 Headers (9-pin USB6_7) (see p.2 No. 22) (9-pin USB8_9) (see p.2 No. 21) Infrared Module Header (5-pin IR1) (see p.2 No. 24) USB_PWR P-7 P+7 GND DUMMY 1 GND P+6 P-6 USB_PWR USB_PWR P-9 P+9 GND DUMMY 1 GND P+8 P-8 USB_PWR IRTX +5VSB DUMMY 1 GND IRRX Besides six 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 header supports an optional wireless transmitting and receiving infrared module. English 19 ASRock A55 Pro Motherboard