Aukru Premium Transparent Housing Case with Aluminum Heatsinks for Raspberry Pi 3 Model B / Raspi 2 Model B/ Pi 2 B + (B Plus) Contains - 3x aluminum heatsink ;1x clear transparent case The case is made of two Piece semi-transparent ABS material.easy for use- just click them together Case Access to all Pi connectors incl: Power, RCA Video, Audio, USB, LAN, SD card, GPIO. No assembly required Compatible with Raspberry Pi 3 / pi 2 Model B / Model B +, you do not set a heat sink under the Raspberry pi modules You only need to put a large heatsink and a small heatsink on the Raspberry Pi 3 / pi 2 / Model B +. The second small heatsink is just a gift