Amazon.com: DTech 4K HDMI Dummy Plug Display Emulator Headless Ghost Adapter Compatible with Windows Mac OSX Linux Support 4kx2k 2160P 1080p for Computer Desktop (fit-Headless, 1 Pack) : Electronics
HDMI Pass-Through EDID Emulator for use with Video splitters, Switches and Extenders (fit-Headless) 1920X1080@59hz - Walmart.com
Amazon.com: NewerTech HDMI Headless Video Accelerator (HDMI Dummy Plug), 4K Display Emulator up to 4096 x 2160 Ultra High Definition Resolution : Electronics
4K HDMI Dummy Plug,Virtual Monitor Display Emulator, Headless Display Adapter Supports up to 3840x2160@60Hz, 1080@120Hz DVI EDID Emulator - Walmart.com