The SAM D20 Xplained Pro evaluation kit is ideal for evaluation and prototyping with the SAM D20 Cortex™-M0+ processor-based microcontrollers. Extension boards to the SAM D20 Xplained Pro can be purchased individually.The ATSAMD20-XPRO evaluation kit does not include extension boards. The SAM D20 Xplained Pro supports the Atmel I/O1 Xplained Pro, OLED1 Xplained Pro, and PROTO1 Xplained Pro