4-port USB Boundless KM Switch (Cables included) - CS724KM, ATEN Desktop KVM Switches | ATEN U.S.A.
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Great-HT GHT HDMI KVM Switch USB 4 Port 4K, 4K @30Hz, KVM Switch 4 PC 1 Monitor, Ultra HD, Hotkey Switch, USB Powered, No Power Adapter Required, with Cable : Amazon.co.uk: Computers