Just received it today and have had no problems so far. It's small and fits well on my desk (although this unit can have up to nine control cables), picture quality doesn't degrade, and the included HDMI and USB cables seem to work. Big. I'd recommend using the included micro USB cable and an external USB power adapter for maximum reliability, especially if you don't have at least one connected system that's always on, as it will draw power through it if you don't use an external power adapter the connected systems. I can't speak to its ability to display 4K at 60Hz as I don't have a 4K monitor to test with. UPDATE: I received a 4K monitor to test after writing this review and can confirm that it supports KVM 4K@. 60 Hertz.
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
CKL Quad Monitor HDMI KVM Switch 4 Port 4K@30Hz with Cables - Extended and Mirrored Display Support for Windows, Linux, and Mac
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
Zalman Z3 M ATX π» Tower Computer: A Compact and Powerful Machine
77 Review
Computer case AeroCool Cylon black
39 Review
Computer case be quiet! Pure Base 500 black
32 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