Macs are expensive, but they have a higher secondhand value than PCs. Here’s how to sell your Mac hardware, whether you’re upgrading to a new Mac or you just want some cash for old MacBooks you have lying around.
Back Up and Delete Your Old Data
It’s obviously not a great idea to sell a device with all of your personal information stored on it. The first thing you’ll need to do is get rid of all of that data and reset your Mac back to factory settings, to protect yourself and also make it easier to set up as a new computer.
You’ll probably want to keep a copy of your data somehow. If you’ve just bought a new Mac, you can migrate your data from your old one to the new one. If you want to start fresh, or are switching to a Windows machine, you can keep a backup of your files in case you need them in the future.
Next, you’ll want to wipe your Mac’s hard drive. You can read our guide on how to do this from Recovery Mode, which shouldn’t take more than an hour or so depending on how much data you have and how securely you want to wipe your hard drive. Afterward, you’ll probably want to reinstall macOS, or else it won’t be usable to whoever you sell it to.
Find Your Specs
Apple releases new Macbooks nearly every year and usually has a dozen models for each launch. You’ll want to find out exactly which one you have to make an accurate listing.
If you know the year your laptop was made (not purchased), you can look it up on Apple’s tech specs database to get a full listing that you can link to. Otherwise, you can click on the Apple logo in the top menu bar and select “About this Mac.”
This will open up a dialog which will list out all of your computer’s specifications.
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Source : How to Sell Your Mac