Overview

The CalDigit Thunderbolt 4/USB 4 Cable (0.8m, model TB4-P08B-540) is an Intel-certified USB-C cable built for maximum performance. It delivers 40Gb/s data transfer and 100W Power Delivery, making it a single-cable solution for charging a laptop, connecting an 8K display, or linking a high-speed external SSD. At 0.8 meters, it’s short enough to keep desk clutter minimal yet long enough for most dock-to-laptop arrangements. This cable uses USB-C connectors on both ends and is backward compatible with Thunderbolt 3, USB4, USB 3.2/3.1/3.0, and USB 2.0. It works with a wide range of devices, including 2016 and later MacBook Pro, 2017 and later iMac/iMac Pro, 2020 and later MacBook Air, Windows Thunderbolt 3/4 notebooks, Thunderbolt docking stations, and USB-C monitors up to 8K.

Connectivity & Compatibility

Connector: USB Type-C male to USB Type-C male Supported standards: Thunderbolt 4, Thunderbolt 3, USB4, USB 3.2 Gen 2×2 (20Gb/s), USB 3.2 Gen 2 (10Gb/s), USB 3.2 Gen 1 (5Gb/s), USB 2.0 Compatible devices: MacBook Pro (2016+), iMac (2017+), iMac Pro (2017+), MacBook Air (2020+), Windows Thunderbolt 3/4 PCs, Thunderbolt docks, high-speed storage, USB-C monitors, mobile batteries, charging adapters Display support: up to 8K at 60Hz via Thunderbolt or USB-C (depending on host) * Power delivery: up to 100W (20V, 5A) for notebook charging

Product Info

Released in 2021, the CalDigit Thunderbolt 4/USB 4 Cable carries Intel’s official certification, ensuring full 40Gb/s bandwidth, 100W PD, and 8K display support. It retails for around $29.99 in the US and ¥3,299 in Japan (). The cable comes with a 2-year manufacturer warranty. Accessories: none (cable only). In the market, it sits at the high end, appealing to professionals and enthusiasts who need guaranteed performance and certification over generic alternatives.

Best Use Cases

Docking station users: The 0.8m length is ideal for connecting a laptop to a Thunderbolt dock on a desk without excess cable looping. Full 40Gb/s ensures no bottleneck when using multiple peripherals or external GPUs. MacBook Pro/Air owners: 100W PD can charge even the 16-inch MacBook Pro at full speed. The cable’s certification guarantees reliable power delivery and data integrity for creative workflows like video editing or 3D rendering. * Future-proof buyers: If you have or plan to get USB4 or Thunderbolt 4 devices, this cable supports the maximum 40Gb/s transfer rate while remaining backward compatible, so it works with older USB-C gear as well. Ideal for regular travelers who want one cable for both charging and data.

Product Disclosure (Amazon)

  • Manufacturer: CalDigit
  • ASIN: B08QL2R7Z3
  • Note: This article covers a manufacturer-made product based on Amazon listing details.