I have a PC with 2x GPU, 2x monitors, 2x HDMI cables. Yesterday I have purchased a KVM switch “KVM Ugreen CM664 HDMI switch”, I have never had such a device, and when I first used it, I was amazed how well it fits my needs. My happiness did not last long though, as soon the second monitor went black. While restarting the KVM device, I noticed there is a power supply port - indeed, the device requires power, supposedly only for USB (it’s HDMI+USB switch), but I thought hey, maybe that’s why monitor went black, maybe device doesn’t have enough power. I connected the power, and was able to use the device for a bit - I thought all is well, until the second monitor, yet again, went black. Long story short, after much debugging (2x GPU/monitor/hdmi +/- kvm, I had lots of combinations to go through), it looks like my HDMI cable is burned - it doesn’t work anymore - I have that cable for 1 month, it was working just fine, it’s also a very expensive one (it’s 10m cable so I bought the best one available to not have issues), and now after adding kvm to the mix, suddenly the cable is not working…
I mean, I am very confused - I never though a CABLE can get burned? Now I am wondering - I of course will return the cable under warranty, I think I will also return the KVM as it scares me - but the functionality offered by a KVM in general, is something that I need. Is this behavior common? I.e. - if I purchase a different KVM, do you think there is a real chance of something like this happening again?
