Hi, Used: EXP GDC Beast DIY eGPU Setup 1.3 (PM Tech Inferno Fan for pruchase) NVidia GPU (GTX 560Ti) Dell 220W power brick ThinkPad L440 (more below) What didn't work (with either NVidia GTX560 or AMD R9 270): Hotplugging always resulted in either nothing happening or screen freeze (both in Win and Setup 1.30). Pre-boot plug-in always (no matter what delay switches settings I used) always froze PC on POST (with exception below). Pre-boot plug-in with everything (USB, camera, ...) disabled in BIOS worked well but the card didn't get recognized, ever. NOTE: Both GPUs and the EXP GDC were fine. What worked (a tale how I made it work): Apply DSDT override (its safer via setup 1.30 because you can always not boot using it and therefore load up original DSDT table) It works for Windows 8.1 You can mount the .img file using eGPU-setup-mount.bat and then simply copy the .aml file to it. [*]Prepare the setup (plug the GPU into Beast, wire up PSU, ...) but don't plug the ExpressCard in. [*](Optional) Boot to setup 1.30 and do the DSDT file loading. [*]Boot to Windows, log in, and put the laptop in sleep mode. [*]Plug in the ExpressCard. [*]Wake up notebook. [*]Install drivers and play! --- Lenovo L440: i7 4712MQ 4(8)*2.3 GHz; 8GB RAM, 180GB boot Intel SSD instead of optical drive, 14'' HD+ display, Windows 8.1 + Setup 1.3 + Ubuntu 14.04 (?).