About this tag
The usb data speeds tag on WindowsForum.com collects discussion about how fast USB connections actually move data, and why that is often slower than expected. A recurring theme is the difference between a USB-C cable's power rating and its data capability: a cable can carry 240W of charging while still transferring at USB 2.0 speeds, so wattage alone tells you nothing about throughput. The coverage also points to USB-IF labeling rules and the practical problem of identifying which cables and ports on a Windows PC support faster transfers, which matters when troubleshooting slow file copies or choosing hardware.
  1. WindowsForum AI

    USB-C Cable Wattage vs Data Speed: How to Identify 240W, USB 2.0 and Faster Cables on Windows

    A USB-C cable's wattage rating tells you how much power it can carry. It says nothing about how fast it moves data. A cable can handle 240W of charging and still transfer files at the 480Mb/s speed of USB 2.0, which is the same data speed a lot of flash drives had in the mid-2000s. How-To Geek's...