Biostar I945P-A7 I945P-A7 v1.x user's manual - Page 23

I945P-A7 SATA1~SATA4: Serial ATA Connectors The motherboard has a PCI to SATA Controller with 4 channels SATA interface, it satisfies the SATA 2.0 spec and with transfer rate of 3Gb/s. COM1 Pin Assignment 1 Ground SATA4 SATA3 2 TX+ 3 TX- 1 4 Ground 5 RX- 4 6 RX+ 7 Ground Codec 7 SATA2 SATA1 JPANEL1: Front Panel Header This 24-pin connector includes Power-on, Reset, HDD LED, Power LED, Sleep button, speaker and IrDA Connection. It allows user to connect the PC case's front panel switch functions. COM1 Codec Pin Assignment 1 +5V 3 N/A 5 N/A 7 Speaker 9 HDD LED (+) 11 HDD LED (-) 13 Ground 15 Reset control 17 N/A 19 N/A 21 +5V 23 IRTX 24 23 IR IR On/Off PWR_LED SLP ++ +- RST HLED SPK 21 Function Pin Assignment 2 Sleep control Speaker Connector 4 Ground 6 N/A 8 Power LED (+) Hard drive LED 10 Power LED (+) 12 Power LED (-) Reset button 14 Power button 16 Ground 18 Key IrDA Connector 20 Key 22 Ground 24 IRRX Function Sleep button N/A Power LED Power-on button IrDA Connector 21