It’s much more convenient to work when you have two monitors. In case you’re using a Mac computer (a MacBook Pro, MacBook Air, or Mac mini) and want to hook an external monitor to it, we’ve got a few tips for you.

First, check which displays your Mac device supports by doing the following:

Click the Apple Menu (located on the left-hand side of the screen) then click About This Mac.

Buying a secondhand Mac is a popular way to save money on relatively expensive equipment that retains its value. Conversely, selling your used Mac is a great way to expose yourself to identity theft — unless you follow these steps to keep your personal information safe.

Like it or not, there will come a time when your once lightning-fast Mac computer can no longer meet modern computing demands. When this happens, you’ll face the following dilemma: should you stick to your current Mac computer or purchase a new one? To help you make this decision, we’ve listed several signs you need to watch out for.