3 onboard devices configuration, Pci-express spread spectrum [disabled, Serial port1 address [3f8/irq4 – Asus K8N-LR User Manual
Page 77: Serial port2 address [2f8/irq3

ASUS K8N-LR
4-23
4.4.3 Onboard Devices Configuration
Advanced Onboard Devices Settings
Serial Port1 Address
[3F8/IRQ4]
Serial Port2 Address
[2F8/IRQ3]
Serial Port2 Mode
[Normal]
Parallel Port Address
[378]
Parallel Port Mode
[Normal]
Parallel Port IRQ
[IRQ7]
Onboard BCM5721 Lan
[Enabled]
Onboard LAN Boot ROM
[Disabled]
Allows BIOS to Select
Serial Port1 Base
Addresses.
PCI-Express Spread Spectrum [Disabled]
Sets or disables the PCI-Express spread spectrum.
Configuration options: [Disabled] [Down Spread]
Serial Port1 Address [3F8/IRQ4]
Allows you to select the Serial Port1 base address.
Configuration options: [Disabled] [3F8/IRQ4] [3E8/IRQ4] [2E8/IRQ3]
Serial Port2 Address [2F8/IRQ3]
Allows you to select the Serial Port2 base address.
Configuration options: [Disabled] [2F8/IRQ3] [3E8/IRQ4] [2E8/IRQ3]
Serial Port2 Mode [Normal]
Allows you to set the BIOS selection mode for Serial Port2.
Configuration options: [Normal] [IrDA] [ASK IR]
The following items appear when the Serial Port2 Mode is set to IrDA or
ASK IR.
IR I/O Pin Select [SINB/SOUTB]
Allows you to select reciever or transmit pin for Serial Port2 (IR
Mode). Configuration options: [SINB/SOUTB] [IRRX/IRTX]
IR Duplex Mode [Half Duplex]
Allows you to select full or half duplex for Serial Port2 (IR Mode).
Configuration options: [Half Duplex] [Full Duplex]