USB4 is now appearing in more and more devices, from high-performance laptops to external storage and docking stations. With its ability to deliver speeds of up to 40Gbps and support advanced video outputs like DisplayPort 1.4a, USB4 is reshaping how we connect and use devices.

But most of us may feel a little lost when it comes to understanding these new standards and the connectors. You might be wondering:

• “Is USB4 the same as USB-C?”
• “What is USB4?”
• “How is USB4 different from Thunderbolt 4?”

Don’t worry, this article will walk through everything, and if you’d like to explore further, we’ve included links to detailed guides. By the end, you’ll clearly understand the questions above, making choosing the devices that fit your needs easier.

USB4, released in 2019, is the latest version of the Universal Serial Bus protocol, designed for high-speed data transfer. It supports speeds up to 40Gbps and is backward compatible with USB 3.2 and USB 2.0, requiring adapters due to its exclusive use of the USB-C connector.

To fully understand the capabilities of USB4, we’ll explore its performance across three key areas: data transfer bandwidth, video output specifications, and power delivery capabilities.

The standout feature of USB4 is its ability to deliver up to 40 Gbps bandwidth, a major upgrade from previous USB standards. This significant boost in data transfer capacity allows for the handling of large amounts of data per second.

For laptops with USB4, the bandwidth enables support for high-resolution external displays. If you are using the laptop paired with a Docking Station, the additional capacity prevents bandwidth bottlenecks, allowing file transfers and video output to run simultaneously. As for external storage devices such as SSDs, USB4 provides speeds comparable to Thunderbolt, ensuring rapid file transfers and efficient data handling. These features make USB4 an indispensable feature for gamers, who rely on smooth, high-quality visuals, and creators, who need fast, reliable performance for transferring large files frequently.

Note: While USB4 can reach up to 40 Gbps, there are also 20 Gbps versions of the standard. Be sure to check the specifications of your device or accessory to ensure it meets your performance needs.

USB4’s enhanced bandwidth also brings significant improvements in display performance. It natively supports DisplayPort 1.4a, enabling display resolutions of up to 4K 144 Hz for smoother visuals in gaming and professional workflows. Additionally, with the use of external adapters, USB4 can convert display output to HDMI 2.1, offering broader compatibility with high-end monitors and TVs. While USB4 ports on laptops do not guarantee multi-monitor support (as the USB-IF does not mandate this in the USB4 specification), pairing a USB4-enabled laptop with a Docking Station will easily unlock the potential for connecting multiple high-performance external displays.

Note: While USB4 can support up to 4K 144Hz, the USB-IF does not mandate manufacturers to meet this specification. When purchasing USB4-enabled laptop or docking station, it is essential to refer to its display capabilities indicated by the product specifications.

Although Power Delivery (PD) is not directly defined by the USB4 standard, most USB4-compatible devices support up to 100W of charging power via USB-C connectors. This ensures efficient charging for high-performance laptops and other power-hungry devices, reducing the time needed to fully charge the battery. 

TL;DR: No. USB4 is a specification, while USB-C refers to the physical, oval-shaped connector.

Keeping up with USB standards can be confusing. With so many versions like USB 3.2, USB4, and Thunderbolt, plus connector types such as USB-A, USB-B, and USB-C, it’s no wonder people often mix them up. USB4 and USB-C are terms that many use interchangeably, but they’re not the same thing.

USB4 is the latest USB standard that focuses on high-speed data transfer, improved video output, and better protocol efficiency. USB-C is simply the connector type, a small, reversible port that’s become the standard interface for modern devices. While USB-C is used by USB4, not all USB-C ports support USB4. A USB-C port might instead use older standards such as USB 3.2. The secret behind USB-C’s ability to support cutting-edge standards like USB4 and Thunderbolt 4 lies in its internal design. Featuring 24 pins, USB-C allows simultaneous transmission of power, data, and video signals. Externally, USB-C’s compact and reversible design makes it perfect for modern ultra-thin devices, from laptops to smartphones. This combination of advanced internal architecture and user-friendly design is why USB-C has become the universal connector, enabling technologies like USB4 to fully realize their potential.

Thunderbolt 4 is the latest version of Intel's Thunderbolt technology that mandates consistent performance with support for 40Gbps bandwidth, the ability to connect two 4K displays or one 8K display, and a minimum power delivery of 15 watts.

Thunderbolt 4 delivers impressive bidirectional data transfer speeds of up to 40Gbps, which is four times the speed of USB 3.2 Gen 1. This capability is crucial for users who need rapid data movement, as it guarantees a consistent performance level.

The bandwidth of Thunderbolt 4 translates to significant advancements in video output capabilities. It supports DisplayPort 1.4, enabling users to connect up to two 4K displays at 60Hz or a single 8K display, resulting in exceptional visual clarity for gaming and creative tasks.

In terms of power delivery, Thunderbolt 4 requires a minimum of 15 watts while offering support for charging up to 100W through USB-C connections.

At a glance, USB4 and Thunderbolt 4 may seem similar, as both support up to 40 Gbps data transfer speeds and use USB-C connectors. However, there are key differences in their specifications. Thunderbolt 4 mandates consistent performance, requiring support for 40 Gbps bandwidth, the ability to connect two 4K displays or one 8K display, and a minimum power delivery of 15 watts.

On the other hand, USB4 offers greater flexibility. It comes in two versions: 40 Gbps and 20 Gbps, depending on the device. While USB4 requires support for at least one external display, it does not impose strict requirements on display performance, leaving implementation details to the manufacturer. This means Thunderbolt 4 provides a higher baseline performance, while USB4 gives users more options to choose what fits their needs.

Compatibility between USB4 and Thunderbolt 4: most Thunderbolt 4 devices are fully compatible with USB4. For example, on a MacBook with Thunderbolt 4 ports, you can use USB4 peripherals without issue. However, when connecting a Thunderbolt 4 device to a USB4-enabled laptop, the performance will depend on the specific USB4 configuration implemented by the manufacturer, which may not fully match Thunderbolt 4’s capabilities.

When choosing between USB4 and Thunderbolt 4, it’s all about flexibility versus guaranteed minimum performance”

• USB4 offers a customizable approach, allowing you to select devices with the specific capabilities you need, whether it’s support for high-resolution displays, fast data transfer speeds, or efficient charging. This makes USB4 an excellent choice for users who value versatility and want to tailor their setup to their actual requirements, without paying for features they might not use.
• Thunderbolt 4, on the other hand, is ideal for those who demand the highest performance in all areas, with consistent 40 Gbps data transfer speeds and support for dual 4K or single 8K displays. It’s also perfect for users who don’t want to worry about understanding technical specifications and prefer a solution that guarantees top-tier functionality out of the box.

If you’re seeking a portable yet powerful docking solution for USB4, the BenQ beCreatus GR10 stands out as an exceptional choice. Designed with mobility and functionality in mind, the GR10 takes full advantage of DisplayPort 1.4a, converting it to HDMI 2.1 for superior compatibility while maintaining excellent display performance. With support for up to 4K at 144Hz, it ensures stunning visuals for both work and play.

The GR10’s upstream connection supports 40Gbps, providing ample bandwidth for its downstream 10Gbps USB-A & USB-C ports, 2.5Gb Ethernet, and HDMI 2.1 interface. This guarantees smooth, stable, and interference-free performance, even when multiple connections are in use. Additionally, it supports 100W Power Delivery (PD), enabling efficient charging for laptops and other power-hungry devices.

Portability is where the GR10 truly shines. Its flip stand allows you to dock devices like smartphones or iPad minis, projecting content to an external display via a single USB-C cable. Perfect for travel or remote work, the GR10 features a durable aluminum casing that ensures excellent heat dissipation during intensive high-speed data transfer and fast charging. The clever cable storage design prevents damage during transit, making it a reliable companion for professionals on the go.

Whether you’re a creator, gamer, or frequent traveler, the BenQ beCreatus GR10 combines the power of USB4 with a compact and practical design, offering the perfect balance between performance and convenience.