Winmate IA70 User Manual page 61

Serial Port 4 Address
Allows you to select the Serial Port4 base address. The options: [Disabled], [3E8],
[2E8].
Serial Port 4 IRQ
Allow BIOS to select Serial Port 4 IRQ.
The options: [3], [9], [10], [11].
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IA70 Motherboard User Manual