
The buttons are broken so you have to press to move from one tower to another. that were not easy to identify. I had to go online to read online what keys to press. My other IOGear 2 port had instructions clearly labeled in the documentation that came with it. I'm not even sure if this model had documentation. Possibly opened packaging, returned item. especially since it's broken. (and it's such a pain getting things back.)

CKL Quad Monitor HDMI KVM Switch 4 Port 4K@30Hz with Cables - Extended and Mirrored Display Support for Windows, Linux, and Mac
11 Review

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

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

TESmart 1080P 60Hz USB VGA KVM Extender Over Cat5e Cat6 Ethernet Cable - Long Range 984ft/300m (Sender+Receiver)
10 Review

Computer case Deepcool Matrexx 55 black
55 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 Deepcool Matrexx 55 MESH black
64 Review

Zalman Z3 M ATX 💻 Tower Computer: A Compact and Powerful Machine
77 Review