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Works just like the original Arduino Mega, but cheaper. However, the reset switch is in a bad location, inaccessible if you have a shield. The original Arduino has reset switch in corner of board. Work around is to unplug usb cable, or wire own reset button on reset pin.
The solder around the 2560 chip actually looks cleaner than on my official Mega board, and I dig the color scheme. Using it for a custom 3d printer, no issues so far, except that some board components are overlapping parts of the solder mask, but the pin configuration is easy to find online so that's no issue.
Works well, just like the Arduino Mega2560. Circuit board quality seems good. Same Caveat as with their UNO clone, You'll need to know your COM port in Windows 10... Ironically it shows correctly in Ubuntu.