USB C to DisplayPort 2.1 Cable - 8K@120Hz, 40Gbps Performance

In this review the Cable Matters USB C to DisplayPort 2.1 cable earns its place as a top choice for users who need the highest-resolution output from a USB-C or Thunderbolt 4 port. The bottom line: it delivers next-gen video bandwidth and a reliable connection for high-refresh 8K and extreme 4K modes, making it well suited to professionals and gamers who need crisp, smooth visuals without troubleshooting adapters.

Key Features

• DisplayPort 2.1 support: Enables ultra-high resolutions up to 8K@120Hz or 4K@480Hz so content looks exceptionally detailed and motion is smooth.
• VESA Certified: The certification guarantees compliance with DP 2.1 standards and supports UHBR 10 mode for up to 40Gbps transmission.
• Uni-directional video: Designed to carry video from USB-C/Thunderbolt devices to DisplayPort monitors for a dependable, one-way connection.
• MST and audio support: Supports Multi-Stream Transport for daisy-chaining multiple displays and delivers enhanced audio output including multi-channel sound.
• Durable construction: Reinforced build reduces accidental disconnections and stands up to daily use for stable performance over time.

Who It's For

The cable is aimed at creative professionals, gamers, and power users with modern laptops or desktops featuring USB-C, Thunderbolt 4, or Thunderbolt 5 ports who need high-bandwidth video output to a DisplayPort 2.1 monitor. If you run high-refresh-rate displays or work in video editing and design, the cable's UHBR 10 capability and VESA certification make it a practical choice.

Users who rely on portable USB-C monitors should look elsewhere because this product is not intended for portable USB-C monitor compatibility. Also, if your display or source is limited to older DisplayPort versions, you will not get the full 8K/4K high-refresh benefits even though backward compatibility is provided.

Pros & Cons

Pros

• Supports top-tier resolutions and refresh rates for professional and gaming setups.
• VESA Certified and compliant with DisplayPort 2.1 standards for predictable performance.
• Solid, reinforced construction reduces signal interruptions and wear.
• Supports MST for daisy-chaining and enhanced multi-channel audio output.

Cons

• Uni-directional design means it only transmits video from USB-C/Thunderbolt to DisplayPort, limiting flexibility for unusual setups.
• Not compatible with portable USB-C monitors, so buyers with those devices must choose a different cable.

Specifications

Brand	Cable Matters
Standard	DisplayPort 2.1 (VESA Certified)
Bandwidth	UHBR 10 / up to 40Gbps
Max Resolution	8K@120Hz, 4K@480Hz (also 4K@240Hz)
Length	6.6ft
Direction	Uni-directional (USB-C/Thunderbolt to DisplayPort)

Our Verdict

The Cable Matters USB C to DisplayPort 2.1 cable is a solid value for anyone who needs high-bandwidth video from a USB-C or Thunderbolt 4 port to a DP 2.1 monitor. Its VESA certification, high data rate, and durable build make it a practical, reliable choice for demanding workflows and high-refresh gaming, provided you do not require portable USB-C monitor compatibility.

Frequently Asked Questions

Will this cable work with Thunderbolt 4 ports?
Yes. The cable is designed for USB-C and is compatible with Thunderbolt 4 and Thunderbolt 5 sources for video output to a DisplayPort monitor.

Can it drive multiple monitors?
The cable supports MST (Multi-Stream Transport) when used with a source and monitor that support daisy-chaining, allowing multiple displays in supported setups.

Is it reversible or bidirectional?
No. The cable is uni-directional and only transmits video from the USB-C/Thunderbolt device to a DisplayPort display, not the other way around.