StarTech.com 4K HDMI KVM Extender over Fiber, HDMI Video & USB over Fiber, up to 984ft/300m (MultiMode), 10G MMF SFP+ Modules - HDMI and USB KVM extender kit controls a KVM switch/console
ATEN CE700A, Cat5 USB KVM Console Extender up to 500 ft.
How to Install the EOC-KVMUSA1 KVM Extender - YouTube
Aten CE100 KVM Extender Cat 5 VGA USB Compact Format - Avacab