USB4 40Gbps Cable - 3.3ft USB-C to USB-C for 8K Video & 240W Charging

In this review the Cable Matters USB4 40Gbps USB-C cable earns a recommendation for users who need a short, high-performance connection for modern laptops and displays. Its single biggest selling point is reliable, USB-IF Verified performance that combines up to 40Gbps data, support for 8K video, and up to 240W of power delivery in one stout 3.3ft length, making it an effective choice for docking, monitor connections, and fast charging without swapping cables.

Key Features

• USB-IF Verified: Certified compliance gives predictable, standards-based throughput and compatibility with USB4 devices and hosts.
• 40Gbps bandwidth: Transfers large files and moves high-resolution video streams quickly, reducing wait time for backups and media work.
• 8K and 4K video support: DP Alt Mode enables 8K@60Hz or 4K@240Hz output for high-refresh gaming, editing, and multi-monitor setups.
• 240W power delivery: USB PD 3.1 EPR support delivers up to 48V/240W for capable laptops and is backward compatible with 140W chargers.
• Backward compatibility: Works with earlier USB standards and Thunderbolt 4 devices, so it fits into mixed device environments without surprises.

Who It's For

The cable is best for professionals and power users who connect modern USB4 or Thunderbolt 4 laptops to high-resolution monitors, docking stations, or external drives and who value the short 3.3ft length to keep desks tidy. Creative users who export large video files or run high-refresh displays will get the most from the combined 40Gbps bandwidth and DP Alt Mode.

Those who primarily need very long runs, passive low-power phone charging, or legacy-only connectors should look elsewhere; this product shines as a short, high-capacity USB-C to USB-C cable rather than a general-purpose long lead or mixed-connector kit.

Pros & Cons

Pros

• USB-IF Verification provides reliable, standards-backed performance for data and video.
• Supports up to 40Gbps and DP Alt Mode for 8K@60Hz or high-refresh 4K output.
• High-power USB PD 3.1 EPR charging up to 240W enables fast laptop charging with compatible adapters.
• Broad backward compatibility with USB 3.x, USB 2.0 and Thunderbolt 4 devices.

Cons

• Fairly short 3.3ft length limits placement flexibility for some setups.
• Several users note the cable feels relatively stiff, which may affect routing in tight spaces.

Specifications

Length	3.3ft
Bandwidth	Up to 40Gbps (USB4)
Video support	8K@60Hz, 4K@240Hz via DP Alt Mode
Power delivery	USB PD 3.1 EPR up to 48V/240W (backward to 140W)
Compatibility	USB4, Thunderbolt 4 compatible, backward to USB 3.2/3.1/3.0/2.0
Certification	USB-IF Verified

Our Verdict

The Cable Matters USB4 40Gbps 3.3ft cable is a compact, standards-backed choice for anyone who needs dependable high-speed data, high-resolution video, and high-wattage charging from a single USB-C connection. It is good value for users with modern laptops and displays who prefer a short, durable cable and want the security of USB-IF verification.

Frequently Asked Questions

Will this cable charge my laptop at full speed?
Yes, with a USB PD 3.1 EPR capable charger and a device that accepts 240W, the cable supports up to 48V/240W; it also works with 140W adapters.

Can I use this cable with older USB devices?
Yes, it is backward compatible with USB 3.2, USB 3.1, USB 3.0 and USB 2.0, and it works with Thunderbolt 4 hosts.

Is the cable flexible enough for tight cable runs?
Many users report the cable is relatively stiff, so it may be less convenient for very tight or intricate routing compared with more flexible USB-C cords.