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Short red USB-C extension cable with male and female ends

RIITOP

RIITOP USB4 Extension Cable 1ft 40Gbps Red

SKU CH-3NH3-A68PT

A 0.3 m USB4 extension cable delivering 40 Gbps data, 8K 60 Hz video and up to 100 W charging for Thunderbolt 3 and 4 docks

  • Connection typeUSB A to USB A
  • Product colorRed
  • Extends Thunderbolt dock cables while protecting laptop ports
  • Delivers 40Gbps data speed under USB4 Gen 3x2
  • Supports up to 100W PD fast charging for devices
  • Drives 8K@60Hz or dual 4K@60Hz displays
  • Works with Thunderbolt 3, Thunderbolt 4 and legacy USB-C

USB4 Extension Cable 1ft 40Gbps

This RIITOP USB4 extension cable adds 1ft of reach to Thunderbolt 3 and 4 docking stations while protecting the host port. It carries data at up to 40Gbps, delivers up to 100W of power, and supports video up to 8K@60Hz or dual 4K@60Hz displays. The male-to-female USB-C connector is coloured red.

Suits dock users needing extra length

Builders who need a longer tether than 1ft or who must keep total cable runs under 1.2m for full 40Gbps operation should look elsewhere. Users relying on USB-A ports on certain docks may find those ports inactive until the female connector is flipped and re-seated. The cable does not add new ports or convert interfaces.

Handles 40Gbps data 100W power 8K video

At 1ft it leaves ample headroom within the 1.2m total-length budget for 40Gbps throughput, 100W charging, and 8K@60Hz or 4K@120Hz video. Beyond the 1.2m combined length the link drops to lower USB speeds, reducing bandwidth for external GPUs and high-resolution displays.

How it compares

Measured against everything we stock in USB Cords & Extension Cables, at today’s prices. Recalculated every night.

Price $12.99
Cheaper than about 70% of the 15,187 comparable items (median $14.99).

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Specifications

Product
Product colorRed
Ports & slots
Connection typeUSB A to USB A

Questions about this item

What type of host port is required for the 40Gbps cable to work?

A USB4 or Thunderbolt 3/4 Type-C port on the host is required to achieve the 40Gbps data rate and 100W PD charging.

Will the extension cable work with my existing Thunderbolt 3 dock like the Dell TB15 or TB16?

Yes, it is compatible with Thunderbolt 3 docks such as the Dell TB15 and TB16; if Type-A ports on the dock stop working, flip the female connector and reconnect.

How can I verify the cable is delivering the full 40Gbps speed after setup?

Connect an 8K@60Hz display or run a disk benchmark on a Thunderbolt SSD; sustained throughput near 40Gbps and stable 8K video confirm full performance.

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