FYI I was able to get this to work on my Dell E6520 running windows 7 64-bit on the i7-2620M with 8GB of RAM. It bumped the windows rating up from a 5.2(GPU limited) to 6.3, and i now am able to run 4 monitors(2 form the iGPU and 2 from the eGPU) The eGPU is a Geforce GT 240 Just a note when cleaning up my DSDT file. I had an error for Name (_HID, "*pnp0c14") and i was able to clean this up by just removing the '*' and my DSDT file worked. I didn't have to do anything fancy besides override my DSDT file. I'm actually able to plug the eGPU in while the computer is ON and running even. :-) (before the DSDT override, plugging in the eGPU would give me an error 12)