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Black USB-C to USB-C cable coiled on white background, 4 ft length

SMUGDESK

SMUGDESK Thunderbolt 4 Cable 4 ft 240W 40Gbps 8K 60Hz 4K 144Hz

SKU CH-6HKE-T5WHY

A 4 ft USB-C cable delivering 240 W charging, 40 Gbps data and 8K 60 Hz video, certified for Thunderbolt and tested to 5 000 bends

Cable Length 4 Feet

  • Transfer files in seconds at 40 Gbps
  • Connect one 8K display at 60 Hz or 4K at 144 Hz
  • Charge laptops and phones up to 240 W with a compatible charger
  • Withstands 5,000 bends in lab tests
  • Works with Thunderbolt 4 and USB4 devices

What this cable delivers

This Thunderbolt 4 certified USB-C to USB-C cable supports 40 Gbps data transfer, 8K video at 60 Hz or 4K at 144 Hz, and up to 240 W power delivery. It connects laptops, tablets, phones, docks and monitors with a single 4 ft cord. Intel certification guarantees full protocol compliance.

Sustained performance

Lab testing confirms the cable withstands 5,000 bend cycles without signal degradation. Real-world throughput reaches 2.8 GB/s read and 2.1 GB/s write, so large transfers keep their speed over the full length. The 48 V / 5 A rating maintains maximum charging power during extended sessions.

Upgrade path and limits

Replaces older USB-C cables limited to 10 Gbps, 60 W or 4K 60 Hz. The jump is worth it when you need 40 Gbps bandwidth, 8K output or 240 W charging for modern laptops. It will not add Thunderbolt capability to hosts that lack the controller.

How it compares

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

Price $15.99
Pricier than about 55% 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 cable get warm or draw extra power when I run a 240 W charge all day?

The cable is rated for up to 240 W at 48 V / 5 A and is built to withstand 5 000 bend cycles, so sustained full-power use stays within its design limits.

My monitor only has HDMI and DisplayPort — will this cable plug straight in?

Both ends are USB-C, so you need a monitor or dock with a USB-C video input, or an active USB-C to HDMI / DisplayPort adapter, to carry the 8K 60 Hz or 4K 144 Hz signal.

I still use a Thunderbolt 3 dock — will I lose the 40 Gbps speed or 8K video?

The cable is compatible with Thunderbolt 3, so it will carry up to 40 Gbps data and 8K 60 Hz video through your existing dock, provided the dock itself supports those rates.

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