Raspberry Pi Compute Module CM1 / CM3 / CM3+ IO Board
The Compute Module 1/3/3+ I/O Board is a companion board for Raspberry Pi Compute Module 3 (CM1, CM3, CM3L and CM3+). It is designed for use both as a development system for Compute Module 1, Compute Module 3 or 3+ and as an embedded board integrated into end products