"USB GenT" is likely an informal or proposed name referring to the capabilities defined in the USB4 Version 2.0 specification, representing a significant leap forward in USB performance. While "GenT" isn't an official marketing term currently used by the USB Implementers Forum (USB-IF), the technical specifications often associated with this term align perfectly with the enhancements introduced in USB4 v2.0.
The core feature described as "GenT" revolves around drastically increased data transfer speeds compared to previous USB standards.
Key Capabilities of "USB GenT" (USB4 v2.0)
Based on the reference provided, the key capabilities often associated with "USB GenT" include:
- Symmetric Bandwidth: It supports transmit and receive data bandwidth of up to 80 Gbps with a symmetric link. This means data can be sent and received simultaneously at speeds up to 80 Gbps in both directions.
- Asymmetric Bandwidth: It also offers flexible configurations for specific use cases like connecting high-resolution displays. It can achieve up to 120/40 Gbps (Transmit/Receive) or 40/120 Gbps (Transmit/Receive) data bandwidth with an asymmetric link. This allows dedicating more bandwidth in one direction when needed.
This level of performance, confirmed by announcements around January 16, 2023, makes it ideal for demanding applications.
Why These Speeds Matter
These high speeds are crucial for:
- Connecting next-generation high-resolution external displays (e.g., multiple 8K monitors).
- Enabling ultra-fast external SSDs for professional video editing, large file transfers, and gaming.
- Facilitating more capable docking stations that can handle numerous high-bandwidth peripherals simultaneously.
- Connecting high-performance peripherals like professional audio/video capture devices.
Comparing USB Generations (Typical Peak Speeds)
To put the "GenT" (USB4 v2.0) speeds into perspective, let's look at common previous USB standards:
| Standard Name | Common Marketing Name | Typical Peak Speed (Gbps) |
|---|---|---|
| USB 3.2 Gen 1 | SuperSpeed USB 5Gbps | 5 |
| USB 3.2 Gen 2 | SuperSpeed USB 10Gbps | 10 |
| USB 3.2 Gen 2x2 | SuperSpeed USB 20Gbps | 20 |
| USB4 (v1.0) | USB4 20Gbps / USB4 40Gbps | 20 or 40 |
| USB4 Version 2.0 | (Marketing name TBD) | 80 (symmetric) |
| 120/40 (asymmetric) |
(Note: Marketing names can sometimes vary or be confusing. Speeds listed are theoretical maximums.)
As you can see, "GenT" speeds are significantly higher than previous generations, often doubling the peak symmetric bandwidth of the initial USB4 standard.
In Practice
When looking for devices or cables that support these speeds, you should look for products certified or labelled as USB4 Version 2.0. Cables are particularly important, as achieving 80 Gbps and 120 Gbps requires active cables in most cases, especially for longer lengths.
In summary, while "USB GenT" isn't an official term, it accurately describes the groundbreaking 80 Gbps symmetric and 120/40 Gbps asymmetric data transfer capabilities introduced with the USB4 Version 2.0 specification, marking a major step forward in USB technology.
