4x4 4K HDMI Matrix Switch Video Wall and Seamless Switching – TESmart
2x2 HDMI Video Wall Controller HD 1080P 1X2 1X4 1X3 3x1 4X1 Multi Screen Stitching Processor 4 TV Splicing Box Splicer 180° Flip
BZBGear 2x2 4K60 HDMI Video Wall Controller BG-UHD-VW2X2 B&H
4K HDMI 3x3 Video Wall Controller with Media Player |9 Channels, HDMI 1.4, HDCP1.4 Compliant | 1 HDMI Input & 9 Outputs | 1x2, 1x3, 1x4, 2x1, 2x2, 2x3, 2x4, 3x1, 3x2, 3x3, 4x1, 4x2 - Yahoo Shopping
2x2 Videowall Processor (Videowall)
Amazon.com: ISEEVY 4 Channel Smart Magic Video Wall Processor for 1x4 4x1 1x3 3x1 TV Wall and Special Art Video Wall Support 0~360 Degree and Pixel to Pixel 4K Display (Only Work
HDMI 2.0 4-Display Video Wall Processor and Controller
Amazon.com: Video Wall Controller 2x2 4K 30Hz Processor HDMI 1.4 HDCP 1.4 Support 2x2,1x2,1x4 with 1 DVI or HDMI Input 4 HDMI Output : Industrial & Scientific