How to connect 3 monitors to my pc

[anomaalwis]

Hello,

I am a layman in computers. I want to connect 3 monitors into my Desktop.

I have one video card but I bought two separate gadgets as well.

1. One monitor is connected to VGA slot in the computer
2. Second monitor is connected to the computer by using a USB 2.0 to VGA converter.
3. Third monitor is connected to a USB to VGA connector as well.

I have Windows 7 in my computer.

My computer recognizes only two monitors at a time.

What am I supposed to do to get the other monitor recognized by the computer.

Appreciate your replies.

Thanks
Anoma

 

[unksol]

You need to provide your system info. USB GPUs are bad ideas when one real GPU can run 2-6 monitors on it's own.