Belkin 4x1 USB Peripheral (F1U401) 4-Ports External USB peripheral sharing switch for sale online | eBay
4PORT USB PS2 VGA OMNIVIEW PRO3 KVM SWITCH W/2X 6FT USB VGA CABLE - Walmart.com
SIIG 4x1 HDMI 4K HDR KVM USB 3.0 Switch with Remote Control - Allows you to control 4 HDMI 4K computers using one keyboard and mouse - HDMI 4K@60, USB 3.0 ports,
Belkin 2nd Gen Secure KVM | Input and Output Devices F1DN104KVM-UN-4 | PCNation.com
F1DN104U Belkin OmniView Secure 4-Port KVM Switch 4 x 1 4 x Type B USB 4 x HD-15 Monitor 1U Rack-mountable Desktop (Refurbished)