-Easy access to every connector-Breakable GPIO opening-Internal mounting holes (4x M2x10)-Micro SD card does not protrude but still accessible-Light guideRaspberry Pi 2 and B+ version has enough power to run a wifi usb stick, 3d printer and logitech camera without another powered usb hub. Reduce the amount of wires around an OctoPrint setup.Printed with a Solid Utopia V2 at 0.150mm layer height, 100/120mm/sEnjoy!Normandhttp://solidutopia.com