Aukru® transparent protective cover for Raspberry Pi B + (B Plus) case for Raspberry Pi B + (Acrylic) +3 Set heatsink (Electronics)
The shell is not bad. A real flaw, however: the card moves slightly inside, so that when we try to connect the Mini USB, it tends to come off! Only one solution: put a small wedge of paper on the side, which you must admit, for a transparent box, is