
Very happy with this io board so far. It's not just a fake official Io board, it's way better. I like the RTC (Real Time Clock) feature of this board, but I have found that the supplied instructions don't work to enable RTC and shouldn't really have any function on the cm4. I just added [ dtoverlay=I2c-rtc, pcf8563 ] to config.txt and it works fine. Overall, I am very satisfied with this product, the additional features and the streamlined design.

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