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I've just attached a 2nd Acer monitor (G205HV) to my new Acer Aspire desktop (X195-UR21P) via a USB powered VGA splitter. The standard monitor that came with the Aspire is working fine through the splitter but the 2nd screen shows "Input not supported". I'm not tech savvy at all. Is there an easy to accomplish way to get the screen working? Primarily only Excel and websites on the second screen, no gaming or high res stuff.


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What happens when you switch the two monitor plugs? – user142485 Jul 10 '12 at 17:53
just switched the plugs and same result. – Jeff W Jul 10 '12 at 18:19
You may have to configure your graphics hardware for dual monitor use. On Windows right-click on a blank area of the desktop and select Properties then the Settings tab. – martineau Jul 10 '12 at 20:18

The message "input not supported" usually occurs when you try to display a resolution which is not supported by the monitor. Either because the resolution or the refresh rate is too high.

Your monitor can display up to 1600 x 900 pixels. How much are you trying to display on it?


You did not confirm that you are using win7. If not, please edit your post to indicate which OS you are using. Assuming win7 for now. On win7 your get these screens when you right click on the desktop and select "screen resolution'

Image of win7 right click on desktop image of windows 7 'screen resolution screen" with part marked

Do you have the 'Multiple displays' part? What does it show? Extend or 'duplicate these displays'?

Edit #2: via a USB powered VGA splitter.

A splitter as in a device which can not generate a second image, but which just copies the output from your original video card? That would explain it. Then your windows only generates on desktop and there is nothing you can do about it.

On the other hand, if you meant a device like a USB plugged GPU or one or something like the matrox dualhead2go then you should be able to get two different desktops.

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Or the refresh rate could be too high. – imtheman Jul 10 '12 at 18:02
Hi Hennes, I really don't know. Don't need very high resolution for the tasks at hand. Primarily excel. – Jeff W Jul 10 '12 at 18:06
just plugged it in – Jeff W Jul 10 '12 at 18:06
Peter, how can I address the refresh rate? I'm not very knowledgeable. I plugged in both monitors through the splitter and only the main one is working. I can't scroll my mouse over to the second screen. – Jeff W Jul 10 '12 at 18:13
If you are using windows, right click the desktop and click on screen resolution. How many displays show up in the box? – user142485 Jul 10 '12 at 18:33

The reason you are getting this message is because the resolution your current monitor is set to does not support the other monitor. You need to lower the resolution in windows.

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I had this problem on two pc's. replace the ps2 keyboard with a usb keyboard and do a detect, and that will fix it

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