詳細內容

Problem

How to select the COM port mode in BIOS?

Solution

Please following the steps to modify the COM port mode from the bios.

Step 1:

Turn on the computer and then press to enter the BIOS Setup Menu during the boot-up. Under the Advanced item, select option AU4 COM RS232/485/422 select.  

  

Step 2:

You can see the COM1/COM2 ports.

 

Step 3:

Select the COM port mode you want.