Try using different USB ports on your PCs and KVM switch to rule out port-related issues. Visit the manufacturer's website to download and install. Which port is this (KVM port 1 or 2)? Does this issue occur on both when connected to the PC? Hi, yes the same happens on both ports. No ideas for something I can try? Only idea I have left is buying a new computer I'm sure there's a work around/fix here. Check your cables to see if there is any faulty one, and make sure they are not loose and are all well plugged into the port. If you're using any adapters, converter cables, or docking stations in. These problems can occur due to various reasons, including: To resolve the USB connection issue, follow these troubleshooting steps: Check USB Cable Connections: Ensure that all USB cables are properly connected to the KVM switch, PCs, and peripherals. 4 to support my 1440p 144Hz monitor (laptop is only 60Hz, but I moved it down to 1440p as well to avoid any possible scaling issues when swapping with KVM). I've tried wired and unwired keyboards and mice plus a handful of other things like headsets. No recognition of the. swich the cables from the kvm ports between the laptop and desktop pc to identify if its the cable.