Asus M2A74-AM SE User Manual - Page 19
Internal connectors - specifications
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6. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports connect to USB 2.0/1.1 devices. 7. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports connect to USB 2.0/1.1 devices. 8. Video Graphics Adapter (VGA) port. This 15-pin port is for a VGA monitor or other VGA-compatible devices. 9. COM port. This 9-pin COM1 port is for pointing devices or other serial devices. 10. 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). Install the Windows® XP Service Pack 1 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. ASUS M2A74-AM SE 1-10