How to enable dual VGA display and enable secondary screen display in Advantech host AIMB-501 motherboard Win7 system

First, enable the second VGA interface on the motherboard in the BIOS to set up dual-screen display in the system.

1. Turn on the computer and press Delete to enter the BIOS interface. Chipset → System Agent (SA) Configuration

2. Enter Graphics Configuration

3. Enter LCD control

4. This option is the VGA1 interface setting. Primary IGFX Boot Display is set to [VGA1]. After setting, the VGA2 interface setting will be displayed.

5、Primary IGFX Boot Display 改成【VGA1】，Secondary IGFX Boot Display【VG2】

6. F4 to save, click yes

7. If dual screens cannot be displayed after entering the system, right-click on the desktop and select Graphics Options → Output to → Extend Desktop (select according to your needs). The monitor is the main screen, and the built-in display is the secondary screen

Hope this helps, thank you!