If you want to use a Raspberry Pi as a 3D print server then it's best to mount it on your printer to free it from the PC's umbilical cord.
This is a surface mountable Raspberry Pi case that has it's holes pitched to suit the Orca 0.4x from Mendel Parts.
BASE_-_RS_TYPE_B_-_Orca.stl | 329.2KB | |
LID_-_RS_TYPE_B_-_Gyrobot_Logo.stl | 129.3KB |