USB4: The Complete Guide [2025]

Введение

USB4 is the latest iteration of the Universal Serial Bus (USB) standard, bringing significant improvements in data transfer speeds, compatibility, and functionality. In this guide, we’ll explore the key features of USB4, how it compares to previous standards, and its applications in various devices.

Key Features of USB4

1. High Data Transfer Speeds

USB4 supports data transfer rates of up to 40 Gbps, which is a significant upgrade from previous USB standards. This high speed enables faster data transfer for applications such as external storage devices, high-resolution displays, and high-performance computing.

Стандарт	Maximum Data Transfer Rate
USB 2.0	480 Мбит/с
USB 3.0	5 Гбит/с
USB 3.1	10 Гбит/с
USB 3.2	20 Гбит/с
USB4	40 Гбит/с

2. Compatibility

USB4 is backward compatible with previous USB standards, including USB 2.0, USB 3.0, и USB 3.2. This means that you can use your existing USB devices with USB4 ports, although you may not be able to take advantage of the full speed of USB4. Additionally, USB4 is compatible with Thunderbolt 3, which provides even more flexibility in connecting devices.

3. DisplayPort Alt Mode

USB4 supports DisplayPort Alt Mode, which allows you to use a single USB-C cable to connect your device to an external display. This feature enables high-resolution video output, up to 8K at 60Hz, making it ideal for professionals who need to connect to multiple monitors or for gamers who want to enjoy high-quality visuals.

4. Power Delivery

USB4 also supports USB Power Delivery, which allows you to charge your devices through the USB-C port. The power delivery capabilities of USB4 can reach up to 100W, making it possible to charge laptops and other high-power devices quickly.

Applications of USB4

1. External Storage Devices

With its high data transfer speeds, USB4 is an ideal choice for external storage devices such as solid-state drives (SSDs) and external hard drives. USB4-enabled external storage devices can provide faster access to your data, allowing you to transfer large files quickly and efficiently.

2. High-Resolution Displays

USB4’s support for DisplayPort Alt Mode makes it a great option for connecting high-resolution displays. Whether you’re a professional who needs to work with multiple monitors or a gamer who wants to enjoy immersive visuals, USB4 can provide the high-quality video output you need.

3. Laptops and Desktops

Many laptops and desktops now come with USB4 ports, providing users with faster data transfer speeds, support for external displays, and the ability to charge their devices. USB4 ports on laptops and desktops can also be used to connect to other peripherals such as keyboards, mice, and printers.

4. Docking Stations

USB4 docking stations are becoming increasingly popular, as they allow users to connect multiple devices to their laptops or desktops with a single cable. USB4 docking stations can provide additional USB ports, Ethernet connectivity, and support for external displays, making them a convenient solution for users who need to expand the functionality of their devices.