We’ve said it before, and we’ll say it again: USB-C is confusing. A USB-C port or cable can support a range of speeds, power capabilities, and other features, depending on the specification used.

USB has been around for decades, and the sheer number of USB and Thunderbolt versions in 2025 can be bewildering. Here's what you need to know about USB 3, USB 4, Thunderbolt 3, Thunderbolt 4, and ...