v AV Access HDMI USB KVM Extender, 50m/164ft 4K 60Hz Over Cat5e/6/6a/7, Support 2K 144Hz, 1080P 240Hz, 4 Ports USB2.0, HDCP2.2, POC, Independent EDID Management, (4KEX50-KVM)

This item does not work over network, it requires a direct connection, which doesn't work for what I need. I'm only giving a negative review because nowhere was it obvious that it didn't work with switches, I only realized after I looked this device up my model number and discovered it. I'm only giving 2 stars because technically they never said it worked with a network, but still very misleading and shady.

The network KVM does not support refresh rates above 60Hz. I bought the network KVM to connect to my gaming PC which was located in another room. The USB ports on the receiver module worked without any issues. When I adjusted the display output settings to 1080p 144 Hz, I would get no signal until my PC switched back to 1080p 60Hz.

I don't usually leave reviews, but decided to for this product because it's a minefield knowing which KVMs are suitable for low latency applications. This one is excellent, as long as you have a dedicated run of Cat6 cable, isolated from the rest of your network. I use it to access my desktop at the other side of the house from my TV in the living room. This includes streaming, gaming and web browsing. It works well with wireless periperals (xbox controller, mouse, keyboard) and is very responsive. The PC can be woken from sleep by tapping a key on the keyboard in the living room. 1080p @ 60htz works well. I've used 4k @ 30htz too and it's good. The distance between the PC and the TV is about 30m and I'm getting no percievable lag - gaming feels exactly like it does on a monitor plugged directly into the PC (I'm not a competitive gamer though). Have found it to be very reliable - if it doesn't work it's usually been an issue with the PC being shut down or windows not liking different scren resolutions on monitor vs TV. Highly recommend.