The lenovo y510p has no thunderbolt or express card but it does come with their own ultrabay technology by which you can add another graphics card inside a socket which hold in place of the DVD drive once you take it out. Apparently the ultrabay is a pcie 3 implementation. So I was thinking if its possible to DIY eGPU. I think besides the basic setup of eGPU one might need a specialized connector for the Ultrabay. Has anyone done it. Can anyone guide me to DIY?