EVanlak DispalyPort Headless Ghost Display Emulator for PC 4K DP Dummy Plug (fit Headless 1080@60Hz- 3840x2160@60hz)-3Pack

headless-dp devices at work for computers that sit on a rack headless (no monitor) can make full use of the capabilities of their internal video cards for GPU processing and rendering.make the computer think that it has a 1080p monitor attached able to make full use of the graphics card
According to the product info, the max res and refresh rate are 2560x1600@60Hz. dp emulator mine going up to 3840x2160@60Hz without any modifications or software patches
hot swapping supported, Plug and play, requires no drivers, configuration or power supply just set Design No drivers, no configuration, no power cable - just set and forget Allows for high works with OSX,Windows, Linux and just about anything else
use headless Ubuntu workstation via TeamViewer.discovered a program called NoMachine which is similar to TeamViewer doesn't require a monitor to be plugged in to the target machine
Enter the store to have more HDMI VGA EDID DVI Emulator Plug Headless,Technical advisory service