Thunderbolt 4 introduced

[German]Intel has introduced on July 8, 2020 it’s Thunderbolt 4 Standard – an universal cable connectivity for everyone. The next generation of its universal cable connectivity solution, delivering increased minimum performance requirements, expanded capabilities and USB4 specification compliance.


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For the first time, Thunderbolt 4 will offer docks with up to four Thunderbolt ports and universal cables up to 2 meters in length. Intel’s upcoming mobile PC processors, code-named “Tiger Lake,” will be the first to integrate Thunderbolt 4.

Intel also announced the Thunderbolt 4 controller 8000 series, compatible with the hundreds of millions of Thunderbolt 3 PCs and accessories already available. Thunderbolt 4 developer kits and certification testing are now available.

“Thunderbolt provides consumers with a leading connectivity standard across a range of devices, helping to advance computing experiences and delivering on the promise of USB-C with simplicity, performance and reliability. The arrival of Thunderbolt 4 underscores how Intel is advancing the PC ecosystem toward truly universal connectivity solutions.”
–Jason Ziller, Intel general manager of the Client Connectivity Division

Why It Matters

Thunderbolt products deliver a consistent set of capabilities for connecting computers to data, video and power with the simplicity of just one USB Type-C port. Connect to powerful Thunderbolt docks, displays, fast storage or any USB accessory for a clutter-free workspace. To ensure a consistent best-in-class1 experience and ease of use across a wide range of product types and manufacturers, Intel works closely with its ecosystem of computer, accessory and cable partners to employ mandatory certification for all Thunderbolt products.

What It Delivers

Thunderbolt 4 builds on Thunderbolt 3 for a truly universal cable connectivity experience. Thunderbolt 4 always delivers 40 Gbps speeds and data, video and power over a single connection. It is the most comprehensive Thunderbolt specification yet with compliance across the broadest set of industry-standard specifications – including USB4, DisplayPort and PCI Express (PCIe) – and is fully compatible with prior generations of Thunderbolt and USB products. Thunderbolt 4 certification requirements include:


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  • Double the minimum video and data requirements of Thunderbolt 3.
  • Video: Support for two 4K displays or one 8K display.
  • Data: PCIe at 32 Gbps for storage speeds up to 3,000 MBps.
  • Support for docks with up to four Thunderbolt 4 ports.
  • PC charging on at least one computer port2.
  • Wake your computer from sleep by touching the keyboard or mouse when connected to a Thunderbolt dock.
  • Required Intel VT-d-based direct memory access (DMA) protection that helps prevent physical DMA attacks. (Read more in the Thunderbolt Security Brief.)
  • thunderbolt4 comparison chart
    Click for full image

    When It Is Available

    Later in 2020 Intel expects to deliver the new Thunderbolt 4 controller 8000 series, including:

    • JHL8540 and JHL8340 host controllers for computer makers.
    • JHL8440 device controller for accessory makers.

    The first computers and accessories with Thunderbolt 4 ports are also expected to be available this year, including laptops based on Intel’s innovation program code-named “Project Athena.” As compared to other PC I/O connection technologies including eSATA, USB, and IEEE 1394 Firewire. Performance will vary depending on the specific hardware and software used. Must use a Thunderbolt-enabled device. For thin-and-light laptops that require less than 100 watts to charge.


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