USB-C is just the connector you plug cables into, while USB4 is the newest USB standard that debuted in 2019. The two are not interchangeable; all USB4 cables use USB-C, but older USB-C ports can’t deliver USB4’s 40 Gbps bandwidth.

USB4 can reach up to 40 Gbps in its first generation and 80 Gbps with Version 2.0, supporting write speeds of 4,000 MB/s. It dynamically shares bandwidth for data, video, and charging, and lets a single cable drive external monitors, docking stations, and fast SSDs. This speed boost is especially noticeable when editing 4K video or moving large game assets between workstations.

If your laptop or PC was bought before 2020, its ports are likely limited to USB 3.2, capping transfer rates at 10 or 20 Gbps. Newer machines from 2020 onward usually support USB4, and you can verify by looking for a “USB4” or Thunderbolt lightning logo on the port or checking the device manual.

USB4 is worth the upgrade for heavy data or video work, offering fast file transfers and dual 4K monitor support via DisplayPort funneling, plus better external GPU compatibility. For everyday peripherals like mice or keyboards, the benefit is minimal.