In the past I have used several quad port KVMs for $300-400 at home. This KVM is definitely not on par with those $400 KVMs. But it works and given its features it's good enough for what I bought it for. Pros: Works with my laptop at 4k with audio over HDMI - PS4 works well with audio over HDMI and PS4 supports a wireless keyboard where I connected the keyboard's USB port to a KVM USB cable connected to a front USB KVM hub that connects to the PS4 controller and works to add the controller to the PS4. It's more like a PS4 than a KVM or hub. But here it is worth mentioning for those who want to use this KVM with PS4. Cons: Requires more power than a single device can provide. If you don't have all of your devices turned on all the time, this could be a problem. If only my laptop was plugged in and I moved the mouse quickly, the screen would freeze and shake badly. As soon as I connected a second power source to the KVM (in the form of a phone charger plugged into the device's unused USB input), the mouse stopped freezing or shaking. - The USB ports are physically wrong. I had to apply a lot of force to the mouse's USB stick to get it into the KVM. After doing this a few times it now comes in and out like it should. - When switching to another device, HDMI connection with the device is not supported. This is to be expected from a $50 KVM. KVM doesn't lie on the table. I had to twist it hard a few times to keep it flat and not wobble. After adding a USB phone charger to an unused USB upstream port, this seems like a solid KVM for the price. Especially considering that more expensive KVMs can't handle 4k very well.
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