The PI B + snaps well into the chassis, the slots seem at first apparently not fit 100%, but the impression is deceptive. Plug and USB sticks have air. The closed housing can also reopen with some care by pressure at the appropriate places. The Micro-SD card concludes inserted flush with the housing. They can plug in without opening the housing and remove again. Although the housing are Ausssparungen for rubber feet o. Ä., But they are missing. This gives the body on smooth surfaces no support. Through the openings of the PI is well ventilated, unfortunately, the LEDs of the PI are obscured. A Plexiglas Lichtlkeiter would have been nice for this, so that more of the operational status of the PI realizes The case is glossy, "fat fingers" are visible immediately after contact with the fingers. Overall, the housing is good, only the Plexiglas optical waveguide really miss you.