Run through this checklist before buying a used Apple computer
Apple
Want to buy an old, used Mac?
It can be a wise way to save money, but it’s not without risks.
Here’s what you should probably know.

Apple
Is It Bad to Buy an Old Mac?
Apple products are often reliable.
The company also has excellent customer support.
Still, you should be cautious.
This list will help you avoid common problems.
RAM is a critical component of any computer.
You’ll want at least 4GB of RAM.
It’s enough for everyday tasks like web browsing, document editing, basic games, and streaming video.
If you might, aim for at least 8GB.
Some older Macs have user-serviceable RAM so that it’s possible for you to replace or upgrade it yourself.
Check the Mac’s specifications to see if this is the case.
Look for a used Mac with at least a 128GB hard drive if you rely heavily on cloud storage.
If not, you’ll want at least 250GB.
Also, check the pop in of hard drive installed.
It will be ahard disk drive (HDD)or asolid-state drive (SSD).
Solid-state drives are quicker and recommended.
Some older Macs have a user-serviceable hard drive you might replace or upgrade.
Check the Mac’s specifications to confirm this.
A dual-core processor is fine for basic, daily tasks.
A quad-core processor can handle most tasks, though the most demanding may still run poorly.
A six-core or eight-core processor is best for users with demanding needs.
The processor usually isn’t user-serviceable, so buy what you need.
You probably won’t be able to upgrade it.
Still, we can put them in two groups.
Used Macs with dedicated graphics (often from AMD or Nvidia) will handle some 3D games and content.
Over time, Apple drops support for older Macs.
Those lacking support can’t upgrade to the new OS.
Here’sthe official list of supported Macs for the latest version of macOS, macOS Monterey.
Older, unsupported Macs continue to function but won’t receive the latest feature updates.
Apple Service Programsoften address widespread defects.
It’s wise to avoid Macs that are not part of a Service Program.
A Service Program will provide a free repair even if you are not the gadget’s original owner.
However, most Service Programs eventually expire (typically after five years).
Buying a Used iMac or MacBook?
Examine The Display
An old, used iMac or MacBook will have a built-in display.
The display is expensive to repair, so it’s important to check it’s working.
TheEizo Monitor Test, available online, is an easy way to check.
Open it and go for the Defective Pixels and Uniformity tests.
They will help you spot significant issues like stuck pixels or a failed backlight.
Buying a Used MacBook?
Also, visually inspect the MacBook’s bottom and rear for any signs of a bulge or lump.
It’s a sign the battery is expanding and needs replacing.
An expanding battery can damage a MacBook and, in the worst case, burst free of its casing.
That’s a problem to avoid.
Check the Used Mac’s Ports
Old, used Macs come with a wide variety of ports.
Inspect the ports to check that they are compatible with the devices you should probably connect.
Look for signs of damage and wear.
A port should never be bent, jagged, or out of square.
FAQ
Check out Apple’s Certified Refurbished website for refurbished Mac minis, iMacs, and more.
Apple also explains what goes into its refurbished Macs.