Geekworm CM3 / CM3 Lite IO Expansion Board for Raspberry Pi Computer Module

Overview:
This CM IO board is an expansion board designed for Raspberry pi compute model CM3 and CM3 lite. You can get the more wide range and more flexible application environment, you can get more simpler interface.

Features:
Can use CM3 or CM3L to implement the Raspberry Pi 3B/3B+ function;
More GPIO extensions than Raspberry Pi 3B: include standard HAT 40PIN GPIO output (fully compatible with Raspberry Pi 3B/3B+) and extra extension 14 PIN GPIO;
Compatible with various expansion boards of Raspberry Pi
Support power the board via battery, can read battery capacity by programing
Support RTC (need to power the board via PH2.0 battery port)
Support CSI/DSI
Support OTG interface (via Micro USB Port for data)
Support CM3 (build in 4GB NAND Flash), support CM3L (TF card slot has a place to use)