SMUGDESK USB 4.0 40Gbps 100W 6.6ft Thunderbolt 3/4 Cable
A 6.6 ft USB 4.0 cable delivering 40 Gbps data transfer, 100 W charging and 8K video output for Thunderbolt 3 and 4 devices
Cable Length 6.6 Feet
- 1.6 Feet$13.99
- 3.3 Feet$13.99
- 6.6 Feet$19.99
- Transfers data at 40 Gbps for rapid file moves
- Delivers up to 100 W power for fast laptop charging
- Drives one 8K 60 Hz or dual 4K 60 Hz displays
- Works with Thunderbolt 3 and 4 hosts and peripherals
- 6 ft nylon braid gives flexible, durable reach
Built for Thunderbolt 3/4 workflows
This USB4 cable reaches 40Gbps data transfer and 100W power delivery over a 6.6ft length. It serves creators and professionals who connect high-speed storage, eGPUs or 8K displays to Thunderbolt 3 or 4 hosts. Buyers needing longer runs or legacy USB-A connectivity will need a different solution.
Nylon braid and full backwards support
The braided jacket protects the cable during daily carry and desk routing. Backwards compatibility with USB 3.2, 3.1 and 2.0 means one cable handles older peripherals without adapters. The 100W rating charges laptops while data moves, removing the need for a separate power brick.
Check host port capabilities first
Verify that your USB-C port supports DisplayPort Alternate Mode for 8K@60Hz or dual 4K@60Hz video output. Without Alt Mode the cable will carry data and power but no video signal. Confirm your device and monitor both list Thunderbolt 3, Thunderbolt 4 or USB4 40Gbps to reach the stated speeds.
How it compares
Measured against everything we stock in USB Cords & Extension Cables, at today’s prices. Recalculated every night.
- Price $19.99
- Pricier than about 77% of the 15,227 comparable items (median $14.99).
Specifications
No published specifications for this item yet.
Other versions of this model
5 more in the same range
Questions about this item
Does the USB 4.0 40Gbps interface cap at 40Gbps in practice?
The cable reaches a data transfer rate up to 40Gbps, twice as fast as Thunderbolt3, and is backward compatible with USB-C 3.2, 3.1, and 2.0 speeds.
What physical clearance does the 6.6ft nylon braided cable need to fit?
The cable measures 6.6ft in length with a nylon braided jacket; ensure your routing path accommodates that distance and the USB-C connector diameter.
How is the cable installed and which step do people get wrong?
Plug the USB-C connectors into host and device; the step often missed is confirming the host USB-C port supports DisplayPort Alternate Mode for 8K@60Hz or dual 4K@60Hz video output.
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