Note: this is the price of 1 pack. Due to the headless ghost there is a display emulator dummy plug that discreetly fits into the video output socket of your computer. Once the headless ghost is attached, your operating system detects a connected display and allows the GPU. The GPU hardware is often disabled until a display leads to poor performance and limited working resolution for remote users. With the activated GPU, various tasks such as high-resolution hardware acceleration desktop and GPGPU operations such as crypto currency can be performed mining. Emulates a monitor connected to the graphics card. Especially good for those who have graphics cards that are incompatible with simple dummy plugs. Perfect for use with PC, Mac Mini, Intel Nuc and another device with HDMI output. Supported resolutions: 3840 x 2160 0 2560 x 1440 1 x 0.79 x 0.32 in box dimensions: 5.12 x 3.54 x 0.39 in net weight: 0.35ou gross weight: 0.36ou pack: 1dispaly emulator.