KVM works as advertised. I have primary gaming PC 4k 120Hz, work laptop 1080p 120Hz (via USB-C 'dock'), and ubuntu server 4k 60Hz using ports 1,2,3 respectively. All are HDMI. Output to TV is HDMI. KVM has performed flawlessly for the first few days so far. The remote is small but solid. The IR extender is a nice feature so I don't have the point the remote at the unit. I just leave the switch On and use the remote to select whatever PC I want to use after I turn on my TV. It's great, wish I would have gotten this sooner. I tried to use USB switches with multiple HDMIs to the TV, but this is so much more convenient. As solid and nicely built as this seems, I'm surprised there are no feet for it. I used some stick on rubber bumper pads a few mm thick and now it sits on the desk nicely. I got this for 140 after 30 coupon and I think it's not a bad deal at all. This is one of, if not the only, 4x PC/3x Monitor that can do 120Hz at 4k resolution. Very pleased with it. Happy that I got the 4 PC model, because I needed 2, wanted 3, and can totally find a reason to use the 4th.