The MA240019 Plug In Module is small circuit board used with the Explorer 16 Development Board (DM240001) to evaluate PIC24FJ64GB004 MCU. The PIC24FJ64GB004 is a 44 pin device with USB On-The-Go (OTG), nanoWatt XLP Technology and Peripheral Pin Select (PPS) features. Due to the flexibility allowed by the PPS feature, the 44 pin device is capable of performing all of the base functions on the 100 pin Explorer 16 board. These plug into the main processor socket of the Development Boards so that different microcontrollers can be used for prototyping, demonstration or development quickly and easily In addition, the PIM is compatible with most of the PICtail Plus daughter boards for the Explorer 16, including the USB PICtail Plus Daughter Board (AC164131).