ETU-SYNC: EDID Emulator for 4K HDR HDMI Signals- Atlona
Prophecy EDID tester (PRO-EDIDemul)
Amazon.com: DTech HDMI Dummy Plug 4K Display Emulator Compatible with Windows Mac OSX Linux Support 4kx2k 2160P 1080p for Computer Desktop (fit-Headless, 2 Pack) : Electronics