ASRock P5B Pro User Manual - Page 24

ATX 12V Connector (8-pin ATX12V1) (see p.10 No. 2) 8 5 4 1 Please note that it is necessary to connect a power supply with ATX 12V plug to this connector so that it can provides sufficient power. Failing to do so will cause the failure to power up. Though this motherboard provides 8-pin ATX 12V power connector, it can still work if you adopt a traditional 4-pin ATX 12V power supply. To use the 4-pin ATX power supply, please plug your power supply along with 8 5 Pin 1 and Pin 5. 4-Pin ATX 12V Power Supply Installation 4 1 Serial port Header (9-pin COM1) (see p.10 No. 23) IEEE 1394 Header (9-pin FRONT_1394) (see p.10 No. 10) RRXD1 DDTR#1 DDSR#1 CCTS#1 1 RRI#1 RRTS#1 GND TTXD1 DDCD#1 RXTPAM_0 GND RXTPBM_0 +12V GND 1 +12V RXTPBP_0 GND RXTPAP_0 This COM1 header supports a serial port module. Besides one default IEEE 1394 port on the I/O panel, there is one IEEE 1394 header (FRONT_1394) on this motherboard. This IEEE 1394 header can support one IEEE 1394 port. HDMI_SPDIF Header (3-pin HDMI_SPDIF1) (see p.10 No. 26) 1 GND +5V SPDIFOUT HDMI_SPDIF header, providing SPDIF audio output to HDMI VGA card, allows the system to con nect HDMI Digital TV/ projector/LCD devices. Please connect the HDMI_SPDIF connector of HDMI VGA card to this header. 24