Review on 🔀 edola 4 Port HDMI Switch Hub - 4x1 HDMI Switcher with PIP, IR Remote Control - Supports 4K x 2K, 1080P, 3D - Compatible with Xbox, PS4, Apple, Fire TV by Dave Hock

Not all USB ports are created equal. The USB port on the side gives me proper control over MOUSE and cursor speed. You must have a USB connection to the keyboard port of the KVM switch to use the keyboard command toggle (CTL+ALT+1) or (CLT+ALT+2). a second (identical color code) Unifying receiver plugged into the side USB port that pairs with my mouse to have a working wireless keyboard and mouse system with this KVM switch. Dedicated USB ports for keyboard and mouse do not offer the same connectivity as the side USB port. The side USB port provides the best performance for my mouse. This is the only port that works and lets me "scroll left and right" by tilting the scroll wheel on my mouse. After adjusting by trial and error. The KVM switch works well. Last note. You need to start the last computer you turned off the night before to wake up the KVM switch in the morning. I rate this an 8 out of 10. There are no issues with HDMI video at all.