This board integrates an 802.3af-compliant PoE circuit (5V/2.5A) for powering the board over Ethernet, and includes 4x USB 3.2 Gen1 ports instead of the 2x USB 2.0 ports on the official Raspberry Pi Compute Module 4 IO board.
Compute Module 4 PoE Board - Waveshare Wiki
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rpi-cm4-ptp-guide/gps-hw.md at main · jclark/rpi-cm4-ptp-guide
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