Atlona AT-UHD-SW-51 4K/UHD 5x HDMI Input Selector Switcher and RCA Audio Output

Kramer VS-42UHD 4x2 4K@60Hz UHD HDMI Matrix Switcher.

Zigen HX-44/HDBT 44X HDBT-70 4K Modular HDMI Matrix Switcher

WyreStorm EXP-MX-0402-H2 4K HDR 4 Input 2 Scaling Output HDMI Matrix Switcher

Kramer VS-44HN 4X4 HDMI Matrix Switcher

BZBGEAR 4x4 4K UHD Seamless HDMI Matrix Switcher/MultiViewer Kit w/ 4 Receivers

WyreStorm MX-0404-HDMI 4K HDR 4x4 HDMI Matrix Switcher with Scaling Outputs

ANI-8-4K60-S 8x8 UHD 4K/60Hz HDMI Matrix Switcher with Scaler/Audio Extractor