I have a Dell XPS 8500 with a AMD Radeon HD 7770 video card. I'd like to connect 4 monitors (each has VGA/DVI outputs). I was told when I bought it that I could use 4 monitors with no extra hardware, but I'm having a tough time getting the 4th monitor to work. I have 3 working fine, but the 4th I cannot get to work.
When calling in the past I've been told the video card can only support 3 monitors, but that the motherboard has a VGA port which I can use. I did notice that port is there. I took the cover off and followed the below instructions to attempt to enable that on-board VGA port:
1. Enter System Setup
2. Go to 'Advanced' ->'Onboard Device Configuration'
3. Select 'Intel Multi-Display', select 'Enable', then Enter 4. Save and exit.
I performed those steps and the monitor connected there is never recognized by Windows 7.
The HD 7770 only supports 3 monitors ... When you plug in a graphic card into the XPS 8500 it shuts off the onboard video ... I don't think you can use both
That stinks that I was not told the truth by the Dell sales and Tech support folks.
Do you think those USB to DVI adapters would work?