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But I have PE4L 2.1b with soldered cables

Thanks man! You are right, I felt slow down. I had problems with TOLUD and radeon hd5670, but updating bios repaired it, so I didn't thinking about dsdt anymore. But I just changed PCI Express in BIOS to GEN1 and it worked! Thank you again! So there is no way I could have gen2?

Hello Everybody! I have problems too... What I got: Lenovo T520, i5 2520M, 16GB RAM dgpu: NVS 4200M egpu: GTX570 (tested on desktop) PE4L 2.1b + 350W ATX After purchasing PE4L I updated BIOS and happily connected to HD5670. Today I recovered my notebook to be sure nothing from radeon drivers left. And for few hours I'm trying to connect with my GTX570. I have no errors in device manager, Both, egpu and dgpu are visible, but still no signal on external monitor. I tried uninstalling dgpu and installing drivers in many combinations, with dgpu enabled, disabled, older drivers etc. And strangely CPU-Z is showing egpu like it shows dgpu without drivers (-250MB of memory). I wanted to try custom verde drivers but couldn't find custom nvam.inf file. Any help is appreciated. I was so happy to play some games this holiday ...