Serial Port 1; Serial Port 2; Parallel Port; Ps/2 Mouse - Acer 500 System Manual

Serial Port 1

This parameter shows the serial port 1 address and IRQ setting.

Serial Port 2

This parameter shows the serial port 2 address and IRQ setting.

Parallel Port

This parameter shows the parallel port address and IRQ setting.

PS/2 Mouse

The BIOS utility automatically detects if there is a pointing device
connected to your system. If there is, this parameter displays the
Installed setting. Otherwise, this is set to None.
BIOS Utility 3-7