This is a design product, which can control the 3.5 inch touch screen and the cooling fan at the same time. Because the 3.5 inch touch screen use the GPIO on the for board, so we stretch out 2 pin for power supply from the screen's cooling pcb. 3.5 inch Touchscreen:320 x 480 resolution, 50FPS. Resistive touch control. Supports any for revision (direct-pluggable). Compatible with for A, B, A +, B +, 2B, 3B, 3B +, 4B versions. Drivers provided. Supports for Raspbian system, system, system (need to install the driver) Note: Please use our recommended touch screen system. If you use other systems, it may not have touch function or not work. You have to configure it yourself. Since there are many systems that can use the for , we cannot make every system compatible with our touch screen. Suitable for Model B. It's DIY kits, needs to finish by yourself. Color: As Shown Material: Metal + PCB Package Contents: 1 x 3.5-inch Resistive Touchscreen Fan Housing Kit 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.