I bought this KVM to support testing multiple computers from a single kbd/mse. I wanted one that supports 4K at 60Hz but couldn't find one for a reasonable price. This device supports 4K @ 30Hz, not optimal but good enough. So far the device has worked well, although I've only tested it with a 1080p TV. As another reviewer noted, I'm having some issues with the switch. Unlike this reviewer, mine works fine; sometimes it takes two presses before it actually switches, and you have to switch fairly slowly. However, I gave only one star for this inconvenience.
CKL 4 Port KVM Switch Dual Monitor DisplayPort 4K 60Hz: Unprecedented Multi-Computer Control with Audio, USB 2.0 HUBS, and DP 1.2
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
Enhance Productivity with CKL HDMI KVM 2 Port 4K 30Hz Dual Monitor Extended Display (CKL-922HUA)
10 Review
Fractal Design Define R5 - ATX Mid Tower Computer Case - High Airflow and Silent Optimized - Includes 2x Dynamix GP-14 140mm Silent Fans - Water-Cooling Ready - Black
43 Review
Computer case be quiet! Pure Base 500 black
32 Review
MasterBox Q300L Micro-ATX Tower with Magnetic Dust Filter, Acrylic Side Panel, Adjustable I/O & Ventilated Airflow, in Black
40 Review
Computer case Deepcool Matrexx 55 MESH black
64 Review