Avenview 4x1 HDMI Switcher with IR and RS232 Control SW-HDM-4X1
HDMI Matrix Video Switcher - 8x8 - 4K HDMI 1.4 - Control Switcher with – BuyTESmart.com
4x1 HDMI Switch with IR & RS-232 Control
HDMI KVM switch 8 port 4K Autoscan, Rackmount, RS232 TESmart
1080P Quad HDMI Multi Viewer Switcher IR Remote RS232 Control PIP Seamless HDMI Switch 4x1 for Projector Monitor - AliExpress
Amazon.com: TESmart 8×1 HDMI Switch 8 in 1 Out 4K @ 60Hz HDCP with 19-inch Rack-Ears | RS-232 / LAN Control | IR Remote Control and Auto Switch | Auto Scan Time Interval - Black : Electronics