 This Raspberry Pi B plus is missing something, specifically a case. To install it, line up the micro USB, HDMI and audio ports with the openings on the case. Press down firmly on the far USB jack until the right side snaps in place. Don't worry, you won't break it. It's pretty sturdy. Finally, press down on the Pi logo with your opposite thumb on the USB jack to snap the left side in place. Congrats, your Pi is now protected.