HDMI 2.0, rx460, GTX1050 or above is required for 4K.(support stand-alone graphics card computer only, not support integrated graphics PC)
Prerequisite: only support the resolutions that graphics card support, HDMI dummy dongle CAN'T emulate a higher pixel that laptop don't support.
Windows system: 4K@60Hz, 4096 x 2160, 3840x2160, 2880x1800, 2560x1600, 2560x1440, 2048x1536, 1920x1440, 1920x1200, 1920x1080, 1600x1024, 1440x900, 1366x768, etc.MAC system: Max 4K, only support the resolution that MAC display

If GPU is often disabled until a display is attached resulting in poor performance and a limited working resolution for remote desktop, compact headless ghost HDMI adapter is a life saver for adding a virtual monitor to computer. Once it's attached, discrete graphics card PC will have GPU enabled to start various of tasks.

Make Things More Easier: single dummy plug HDMI emulator help you not have to connect a real monitor at all, and still get a virtual screen with its own EDID when using remote management software such as VNC.
If your main workstation is a 4K screen (TV, 27” iMac,etc), simple 4k HDMI dummy plug 3 pack gives you several monitor resolutions to choose from and prevents the system from defaulting to the lowest resolution when rebooting the system.
So you can have remote desktop accessed to a headless MAC mini server, closed-lid laptop, Intel NUC, Compulab headless fit-PC at high resolution and frame rate, don't have to suffer the annoying issue of the small screen sharing.
Fit-headless HDMI display emulator 1080p simplifies streaming game and multimedia from a headless gaming PC to a living room with high refresh rate and HDMI audio; enables your mining rig boots normally; saves the need to connect a display to PC when used with VR headset.

HDMI Male Interface
HDMI faker for Windows 11 10 8.1 8 7 XP, MAC OS, Linux,etc.
What's Included: Gold Plated HDMI Monitor Emulator 3 Set