First I got one of those KVM switches that says PWAY 4K@60Hz at the top. This would only give me the 50Hz option. But this KVM switch actually allows me to select 100Hz. I'd like to give it 5 stars just for that, but... it doesn't have good keyboard support. I have a Corsair K70 and when I plug it into a USB keyboard port on the KVM it just goes nuts. I need to connect it to a USB 2.0 pass-through port. This works except it repeats the keys unless I use a switch on the keyboard to slow down the polling rate. I have no problem plugging my Logitech USB receiver into the KVM's mouse USB port, so everything is fine. I just don't have a USB pass-through port because I have to use it for the keyboard. But at least it works! This PWAY KVM switch keeps repeating keys no matter how low I set the query.
π TRENDnet TK-803R: 8-Port Rack Mount KVM Switch with VGA & USB Connection, USB/PS2 Support, Device Monitoring, Auto Scan - Control 8 Computers/Servers
10 Review
4 Port USB 3.0 Switch Selector - Pubioh KVM Switch for Mouse, Keyboard, Printer, Scanner - 2 in 4 Out Sharing Box with Switch Button and 2 USB 3.0 A to A Cables
11 Review
NEWCARE HDMI KVM Switch: 4K@60Hz, 2x1 HDMI2.0 Ports + 3X USB KVM Ports - Share 2 Computers on UHD Monitor, with Wireless Keyboard and Mouse Support - USB Disk, Printer, USB Camera Compatible
10 Review
TESmart 1080P 60Hz USB VGA KVM Extender Over Cat5e Cat6 Ethernet Cable - Long Range 984ft/300m (Sender+Receiver)
10 Review