4K HDMI-compatible Dummy Plug,Virtual Monitor Display Emulator, Headless Display Adapter Supports up to 3840x2160@60Hz, 1080@120Hz DVI EDID Emulator - Walmart.com
FTjfrsbc Virtual HDMI-compatible Dummy Adapter 1.4 DDC EDID Display Emulator for Min - Walmart.com
HDMI Dummy Plug 4K Display Emulator Compatible with Windows Mac OSX Linux Support 4kx2k 2160P 1080p for Computer Desktop fitHeadless 2 Pack Cable Management - Newegg.com