Despite the popularity of slim, speedy external SSDs, external hard drives are still essential, cost-effective storage. For as little as $50, you can add a terabyte ... use a 3.5-inch drive ...

It’s available in 1TB, 2TB, and 4TB capacities ... an older standard like USB 2.0. Make sure your external hard drive uses at least USB 3.0 (which is about ten times faster than USB 2.0 by ...

It’s never been easy to upgrade the storage in Macs, so it’s always a good idea to buy an external drive ... to either 1TB or 2TB of storage, and it was still using an old USB 3.0 interface ...