Asus P3-PE5 - Manual (Page 14)

1-4 Chapter 1: System introduction
1.3 Rear panel
The system rear panel includes the power connector and several I/O ports
that allow convenient connection of devices.
1. Cover screw.
2. PS/2 mouse port. This green 6-pin connector is for a PS/2 mouse.
3. Parallel port. This 25-pin port connects a printer, scanner, or other
devices.
4. Air vents.
5. USB 2.0 ports 1, 2, 3 and 4. These 4-pin Universal Serial Bus (USB)
ports are available for connecting USB 2.0 devices.
6. LAN (RJ-45) port. This port allows Gigabit connection to a Local Area
Network (LAN) through a network hub.
7. Metal bracket lock.
8. Voltage selector. This switch allows you to adjust the system input
voltage according to the voltage supply in your area. If the voltage
supply in your area is 100-127V, set this switch to 115V. If the
voltage supply in your area is 200-240V, set this switch to 230V.
9. Power connector. This connector is for the power cable and plug.
10. Cover screw.
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WARNING! Setting the switch to 115V in a 230V environment or 230V
in a 115 environment will seriously damage the system!