I have a T420s, and after maxing it out RAM/HD-wise, managed to get one of the adapter boards so I could put a FHD IPS screen (the same model you mention) in it

I have a T420s, and after maxing it out RAM/HD-wise, managed to get one of the adapter boards so I could put a FHD IPS screen (the same model you mention) in it. One of the reasons the guy stopped selling the adapter boards was the huge proliferation of "fake" screens being sold as specific models.