Asus P5KPL-AM/PS - Manual (Page 40)

1-28 Chapter 1: Product introduction
7. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports
are available for connecting USB 2.0 devices.
8. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports
are available for connecting USB 2.0 devices.
9. Video Graphics Adapter (VGA) port. This 15-pin port is for a VGA monitor
or other VGA-compatible devices.
10. Serial port. This 9-pin COM1 port is for pointing devices or other serial
devices.
11. PS/2 keyboard port (purple). This port is for a PS/2 keyboard.