Review on 🖥️ DVI 2 Port Manual Switcher Selector Switch Box for Single Mode Monitors - 1920X1080 Resolution - 2:1 Switching Efficiency by Jared Barit

I didn't like it. I tried several known good cables and made sure they all worked when plugged directly into my monitor, so it wasn't a problem with my bad cable. The box just missed the signal wrong. I have nothing but a black screen with vertical stripes. This is what I would expect if the wiring got disconnected somehow (not properly connected, wires touching, pins are either not connected or connected to the wrong pins). I'm assuming it's a quality control issue as everything has to go straight through the wiring. Maybe you'll get a good one, maybe you'll get a bad one. I have a bad one, but I don't play the other one; I'll order something else instead.