How to prevent DVI2USB is identified as a new Monitor

Hi all,

I have this setup we i have 2 monitors connected on a computer, both monitors are Dell.

On windows configuration monitors both shows correctely, one with a resolution of 1920x1200 native and the other 1920x1080 native

When i connect the DVI2USB to a splitter its identifiing DVI2USB as a monitor and reducing the resolution to 1920x1080.

I dont whant DVI2USB appearing as a monitor its possible?
And why its changing the resolution.

In fact i found the solution, reset the edid file!!!