time, upgrading your Mac’s memory or hard drive was a relatively easy way to extend its usable lifespan. However, newer models have become increasingly more difficult to upgrade, to the point where memory and internal drives are no longer user–replaceable. But don’t worry — if your Mac runs on a painfully slow hard drive or Fusion Drive, you can enjoy the benefits of a much–improved performance by switching to an external solid–state drive (SSD). Yes, thanks to the fast (5Gbps or better) transfer speeds found on USB 3.0 and Thunderbolt ports, your new SSD will noticeably outpace