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StarTech.com 3 Port Multi Monitor Adapter - DisplayPort 1.4 to 3x 4K DisplayPort Video Splitter - Dual or Triple 4K - Laptop/Desktop DisplayPort MST Hub for Multiple Monitors - For Windows PCs Only

StarTech.com 2x2 HDMI Video Wall Controller - 4K 60Hz HDMI 2.0 Video Input to 4x 1080p Output - Video Wall Processor for Multi Screen Display - Video Wall Splitter - RS232/Ethernet Control

StarTech.com 4K HDMI over IP Extender Kit with Video Control App, Scalable AV over IP with support for AVoIP Video Wall

Lindy 70m Cat.6 HDMI 4K60, Audio, IR and RS-232 HDBaseT Extender with ARC

Lindy 70m Cat.6 4x4 HDMI 4K60 Matrix Extender

StarTech.com 3-Port Multi Monitor Adapter - DisplayPort 1.2 MST Hub to Dual 4K 30Hz & 1x 1080p - Video Splitter for Extended Desktop Mode on Windows PCs Only - DP to 3x DP Monitors

Lindy Control Keypad, 6 Keys and Dial – Programmable AV & Room Control Interface

Crestron AM-3200-WF-I AV extender AV receiver Black