The APCB M3 board is likely a sub-assembly inside a larger product (e.g., a Samsung monitor, a Dell power supply, or a Chinese CNC controller). Look for a main brand logo or FCC ID on the board.
APCB M3 94V-0 is not a specific device model, but rather a technical marking found on printed circuit boards (PCBs) produced by the manufacturer Understanding the Marking apcb m3 94v0 schematic install
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