External SSDs, ranked by cost per terabyte

An external SSD packs flash storage into a compact, rugged enclosure with a USB-C (or Thunderbolt) connector, combining the speed and shock-resistance of solid-state with true portability. With no moving parts, it shrugs off the bumps and drops that kill portable hard drives, runs silently, and fits in a pocket — making it the go-to for photographers and videographers offloading cards in the field, editors carrying active projects between machines, and anyone who wants fast, reliable storage on the move. Real-world speeds range from roughly 400 MB/s on basic USB units to several gigabytes per second on Thunderbolt and USB4 models.

External SSDs cost considerably more per terabyte than portable hard drives, so the decision comes down to whether you need speed and durability or maximum capacity for the money. For backups of a large media library where you’ll wait a few extra minutes, a portable HDD is far cheaper per terabyte. For working files, camera offloads, OS-on-a-stick and anything you’ll carry daily, the external SSD earns its premium. When comparing value, match the drive’s interface to your computer’s port (a fast drive on a slow port runs at the port’s speed), and check the rated IP dust/water protection if you work outdoors.

Matching the interface: USB 3.2, USB4 and Thunderbolt

An external SSD is only as fast as the slowest link between drive and computer. The connector looks like USB-C in every case, but the protocol behind it sets the real ceiling. Buy to your actual ports.

A Thunderbolt drive connected to a plain USB port will run at USB speed, so there’s no value in buying ahead of your hardware. For most people a USB 3.2 Gen 2 drive hits the best balance of speed and $/TB. See our storage for creators guide for field workflows.