Compatibale with Raspberry Pi 3 Model B,2 Model B and 1 Model B+. Any Arduino board whose mounting holes are the same with UNO and Mega 2560 can be fixed upon this Holder with screws. Be able to fix the 400 points and 800 points self-adhesive breadboard. There are M3 fixing holes in the middle which can be used to fix the RAB Holder upon your experiment table. Size?200*135mm ->7.87inch * 5.31inch.