Amazon.com: Compute Module IO Board with PoE Feature for Raspberry Pi Compute Module (CM3 / CM3L / CM3+ / CM3+L),Raspberry Pi GPIO Header, for Connecting Sorts of Raspberry Pi Hats : Electronics
Datasheet Raspberry Pi Compute Module (Cm1), Compute Module 3 (Cm3) and Compute Module 3 Lite (Cm3l) Download Printable PDF | Templateroller
Raspberry Pi Compute Module 4 IoT Router Carrier Board Mini - DFRobot