Main advantages of DP Virtual Display: 1. It can up to 4K resolution, that is, 3840x2160 resolution. 2. Small size, low power consumption, no heat. 3. Support plug-and-play and hot-swapping. 4. No driver required, supports all systems The main function of this product is to a display. Its main uses are: 1. When controlling the computer remotely, the screen resolution can be set to a very , instead of the lowest resolution black screen state. 2. Let the graphics card work normally and dissipate heat properly when using it. 3. A low-cost solution that replaces the monitor and can be used to test graphics cards and related applications. note: With work indicator light Material: plastic+metal colour: Black Package Contents: 5 x Displayport Dummy Plug Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.