What is USB4?

USB4 is a standard developed by the USB Implementers Forum to unify and simplify the use of USB interfaces. The design goal of USB4 is to provide higher transmission speeds and stronger functions while maintaining compatibility with previous versions.

The main features of USB4 include:

1. Ultra-high transmission bandwidth

The USB4 1.0 version supports 40 Gbps bidirectional transmission, which is twice that of USB 3.2 Gen 2×2 (20 Gbps); the USB4 2.0 version released in 2022 is further improved to 80 Gbps bidirectional transmission, and the unidirectional bandwidth can reach 120 Gbps (asymmetric mode), meeting the needs of 8K/16K video transmission and AI computing.

2. Compatibility

USB4 is backward compatible with USB 3.2, USB 2.0 and Thunderbolt 3, which means that users can switch seamlessly between different devices.

3. Enhanced power supply capability

USB4 supports up to 240W power output (48V/5A), which can drive high-performance notebooks, workstations and even monitors.

4. Versatility

USB4 not only supports data transmission, but also transmits video signals and power, which makes it useful in a variety of application scenarios.

Application scenarios

USB4's versatility and high performance make it widely used in multiple application scenarios. Here are some typical application scenarios:

1.Personal computers and laptops: USB4 can be used to connect external hard drives, printers, monitors and other devices, providing high-speed data transmission and charging functions.

2.Gaming devices: USB4's high transmission speed and low latency make it ideal for connecting game controllers, VR devices and high-resolution displays.

3.Video production and editing: USB4 supports high-resolution video output and fast data transmission, suitable for video production and editing.

4.Mobile devices: USB4's high power transmission capability makes it an ideal charging interface for smartphones and tablets, and users can achieve fast charging and data transmission through the USB4 interface.

5.Industrial applications: USB4's high reliability and compatibility make it used in industrial equipment and automation systems, and can meet the high requirements for data transmission in industrial environmen.