We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
A braided USB-C cable with straight connectors, 6.6FT length

SMUGDESK

SMUGDESK USB4 Thunderbolt 4 Cable 100W 40Gbps 8K 6.6FT

SKU CH-5T6S-ZVAJG

A USB-C cable delivering 100W charging, 40Gbps data and 8K@60Hz video over 6.6FT

Cable Length 6.6 Feet

Style USB4

  • Charge phones to gaming laptops at up to 100W with a compatible charger
  • Stream to one 8K display at 60Hz or two 4K displays at 60Hz
  • Move large files at up to 40Gbps with USB4 Gen3 ports
  • Works with Thunderbolt 4 and Thunderbolt 3 hosts and devices
  • 6 ft length gives flexible placement for desk or dock setups

SMUGDESK USB4 Thunderbolt 4 Cable 100W 40Gbps 8K

This 6.6 ft USB-C to USB-C cable supports up to 100W power delivery at 20V/5A for charging phones, accessories and gaming laptops. It provides 40Gbps bandwidth for single 8K@60Hz or dual 4K@60Hz video output. Data transfer reaches up to 40Gbps with compatible Gen3 ports, dropping to 20Gbps on Gen2 ports.

Bundled capabilities and real-world impact

The 100W charging works only when paired with a compatible charger and device, delivering the maximum power each device supports. Video output requires host and display hardware that can drive 8K@60Hz or dual 4K@60Hz over a single cable. The 40Gbps data rate is theoretical; actual read speeds reach 2.8GB/s and write speeds 2.1GB/s on suitable ports.

Checks before ordering

Verify your charger, laptop and dock all support USB Power Delivery up to 100W to use the full charging capability. Confirm your host port is USB4 Gen3 or Thunderbolt 4 for 40Gbps bandwidth; Gen2 ports limit transfer to 20Gbps. Ensure your monitor and graphics output support 8K@60Hz or dual 4K@60Hz for the advertised video modes.

How it compares

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

Price $16.99
Pricier than about 60% 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

Will the USB-C connectors on this 6.6FT cable wear out from daily plugging and unplugging?

The cable uses standard USB-C connectors rated for thousands of insertion cycles; no user-serviceable parts exist, so replacement is only needed if the connector housing or cable jacket shows physical damage.

What limits the 40Gbps data rate during a long file transfer?

Sustained throughput drops to the host port capability — 20Gbps on USB 3.2 Gen 2 ports and 40Gbps on USB4 or Thunderbolt 3/4 ports — so the port, not the cable, becomes the bottleneck.

Does the cable get warm when delivering 100W charging continuously?

At 100W (20V/5A) the conductors are sized to handle the current with minimal temperature rise; the cable remains safe to touch during all-day charging sessions.

More in USB Cords & Extension Cables

Similar items