Hi everyone!   Here's the experimental mod for Y400/Y500: https://mega.nz/#!qBYE0BLa!Nos2gBVE8-_eOX8O5bSyxSEjgOQ154QSu4BWnk6C3qc   It is also based on Svl7's work and should enable both AMD and Nvidia eGPUs for Y400/Y500. So far, @Swung Huang has successfully tested it with GTX 1070 on his Y400, but I'd be grateful if more people verified that it works for them. Especially, would be interesting to hear whether AMD cards work too.   If everything is good, I'll create