# What Is USB4? What the Next Generation Brings to Charging and Data

> USB4 is a standard that affects charging just as much as data speed. Here is a look at what this next-generation connectivity standard actually offers.

- Published: 2025-05-17
- Category: Technology
- 6 min read

USB4 is built on Thunderbolt 3 architecture and delivers data transfer speeds up to 40Gbps, a meaningful leap over the previous USB 3.2 generation. But USB4's impact is not limited to data speed, it also brings a more integrated approach to power delivery.

The USB4 spec was designed to work fully alongside USB PD 3.1, meaning a single USB-C port can now handle up to 240W of power delivery, high-speed data transfer, and video output all at the same time.

The practical result for users is being able to connect a laptop to an external monitor and charge it simultaneously with just one cable. That cuts down on cable clutter in desktop setups, which is a real win for both aesthetics and practicality.

Widespread USB4 adoption requires compatibility on both the device and cable side; not every USB-C cable supports USB4 speeds, so anyone who needs fast data transfer should check the cable label for a USB4 or Thunderbolt marking.

As Charjett develops its high-power cable lineup, PD 3.1 compliance and quality internal construction are being adopted as standard for future USB4-compatible products too, keeping them useful well into the future.

Keywords: USB4, data transfer, USB-C PD 3.1, next-gen connectivity, 240W charging

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