I have ordered the adapter for my y410p, will report back if it works.
---2016.11.5 update
Follow steps as Tesla mentioned in the previous post. My Y410p recognized rx480 and the performance is very good. Thanks for your awesome adapter, gerald!
---2016.11.3 update
Just received my adapter, plugged into my Y410p (i7 4700MQ / GT750M version), boot without any error. Also, device mgr doesn't show any new device or external card plugged in (designed to work like that?).
I'm on BIOS v2.07, Windows 10 anniversary update.
Tomorrow I will receive my rx480 and PSU, will report back if it works.