How to extend display on two monitors with VGA splitter


currently in my XP machine I have one video card with one VGA output. With that VGA output I am using a VGA splitter and connecting two monitors. XP Detects the second monitor and lets me do the usual functions on it. If I go to display properties I can see two monitors labelled "1" and "2".

Now when I run the same setup (different vid card, maybe newer I dont know) Win 7 only detects one monitor. My internet research showed me that it is impossible to have two monitors detected by the OS when using a VGA Splitter. I must either use a video card with two outputs or use some other similar device.

My question is how can XP detect two monitors but Windows 7 cant?

Best Answer

Splitters don't support extended desktop applications. All a Video Splitter does is display the same image on multiple monitors. If you are looking for extended desktop features you probably need a video card with multiple video outputs.

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