You probably own it and have used it—but you've never once thought about it.

Universal Serial Bus (or USB) is a versatile interface that's used in all sorts of devices — from smartphones to lifestyle products — to deliver data, power, and video signals. Most commonly, we see ...

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 ...