Asus AT3GC-I User Manual - Page 17

7. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports connect to USB 2.0/1.1 devices. 8. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports connect to USB 2.0/1.1 devices. 9. Video Graphics Adapter (VGA) port. This 15-pin port is for a VGA monitor or other VGA-compatible devices. 10. COM port. This 9-pin COM1 port is for pointing devices or other serial devices. 11. PS/2 Keyboard port. This port is for a PS/2 keyboard. 1.7.2 Internal connectors 1. Serial ATA connectors (7-pin SATA1, SATA2) These connectors are for the Serial ATA signal cables for Serial ATA 3Gb/s hard disk and optical disk drives. The Serial ATA 3Gb/s is backward compatible with Serial ATA 1.5Gb/s specification. The data transfer rate of the Serial ATA 3Gb/s is faster than the standard parallel ATA with 133MB/s (Ultra DMA133). SATA2 GND RSATA_TXP2 RSATA_TXN2 GND RSATA_RXP2 RSATA_RXN2 GND SATA1 GND RSATA_TXP1 RSATA_TXN1 GND RSATA_RXP1 RSATA_RXN1 GND AT3GC-I SATA connectors Install the Windows® XP Service Pack 2 or later version before using Serial ATA. 2. Optical drive audio in connector (4-pin CD) This connector allows you to receive stereo audio input from sound sources such as a CD-ROM, TV tuner, or MPEG card. CD Left Audio Channel GND GND Right Audio Channel AT3GC-I Internal audio connector AT3GC-I AT3GC-I ASUS AT3GC-I 1-8