The second-hand market for MacBook Pros is lucrative, and therefore, ripe with fraud. A seller may claim a unit is a “2023 16-inch M2 Max” but actually be selling a 2021 M1 Pro model with a swapped bottom case. By running the serial number through Apple’s coverage page or EveryMac, you can verify the advertised specs against Apple’s database. If the RAM or storage shown online does not match the seller’s claims, walk away.

Apple provides a free public tool at checkcoverage.apple.com . Entering the serial number here will instantly return the model description and warranty status. This is the quickest way to verify that the serial number is recognized by Apple. A response of “This serial number is not valid” is a massive red flag, indicating a counterfeit, a modified number, or a device never sold by Apple.

On the MacBook Pro itself, the serial number is laser-etched on the bottom case, near the hinge. On older models (pre-2018), it may also be inside the Thunderbolt ports. Once booted, the most reliable method is to click the Apple logo in the top-left corner → “About This Mac.” The serial number appears in the Overview tab. Warning: Physical stickers and boxes can be faked. Always verify the number displayed in macOS itself, as it is read directly from the logic board firmware.