Acer AR180 F1 - Manual (Page 93)

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Onboard LAN Option ROM Select: Select iSCSI to use the iSCSI Option
ROM to boot the computing using a network device. Select PXE to use
the PXE Option ROM to boot the computer using a network device.
Boots Graphic Adapter Boot Priority: This feature allows you to select
the graphics adapter to be used as the primary boot device.
Super IO Configuration
Serial Port1 Address/ Serial Port2 Address: This option specifies the
base I/O port address and the Interrupt Request address of Serial Port 1
and Serial Port 2. Select Disabled to prevent the serial port from
accessing any system resources. When this option is set to Disabled, the
serial port physically becomes unavailable. Select 3F8/IRQ4 to allow the
serial port to use 3F8 as its I/O port address and IRQ 4 for the interrupt
address.
Serial Port 2 Attribute: Select COM to configure the onboard COM2
port as a normal serial port. Select SOL (Serial Over_LAN) to configure
the onboard COM2 port as a virtual COM port for SOL use.