Asus M2A74-AM SE - Manual (Page 19)

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.
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