I need to check if my Apple 20W USB-C Power Adapter is original or copy?
I need to chalking apple 20 wads adapter original or copy
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One method is to connect it to your Mac. Then go to System Information > Hardware > Power > AC Charger.
Look for "Apple, Inc." in the Manufacturer field. It's not a 100% guarantee but should be fairly accurate.
Alternately, only purchase power adapter directly from either Apple or an Apple Authorized Reseller.