SKmoon (TM) New Transparent Acrylic Raspberry Pi Case Enclosure Box with External Fan for Model B+(b Plus) Cooling design with fan,It has good heat dissipation function.It can avoid your Raspberry Pi running overheat. 2 pieces of transparent acrylic box parts,It is easy to assemble and provides full access to your Rasoberry Pi. Hard plastic case with fan secures your model B+ . Equipped with screwdriver assembly. More easy to access to the boardpower, LAN (model B only), SD card and Light pipes,RCA Video, Audio, USB.