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Braided USB-C to USB-C cable, 3.3 ft, matte connectors

SMUGDESK

SMUGDESK USB4 40 Gbps 240 W C-to-C cable 3.3 ft

SKU CH-1S4F-MF9QS

A 3.3 ft USB4 cable delivering 40 Gbps data transfer, 8K@60 Hz video and up to 240 W charging with an E-Marker chip

Cable Length 3.3 Feet

  • Charges up to 240 W with PD 3.1
  • Transfers data at 40 Gbps with USB4 Gen3
  • Drives 8K at 60 Hz or dual 4K at 60 Hz
  • E-Marker chip regulates power and protects devices
  • Braided 3.3 ft cable works with Thunderbolt 3 and 4

What this cable is and who needs it

A USB4 Gen3 Type-C to Type-C cable rated for 40 Gbps bandwidth and 240 W Power Delivery 3.1 charging. It suits owners of laptops, phones or docking stations that support USB4 or Thunderbolt 3 and want a single lead for high-speed data, 8K video and maximum charging power.

Thermals noise and power draw in normal use

The integrated E-Marker chip negotiates up to 48 V at 5 A so the cable handles 240 W without overheating. It is backward compatible with 140 W, 100 W, 60 W and lower PD profiles, drawing only what the connected device requests. No active cooling is required and the braided jacket remains cool during sustained transfers.

What this replaces and when the upgrade is worth it

Replaces older USB 3.2 Gen 2 cables limited to 10 or 20 Gbps and 100 W charging. The jump is justified when you need 40 Gbps for eGPU enclosures, dual 4K 60 Hz or single 8K 60 Hz displays, or 240 W charging for large laptops. If your hardware only supports 20 Gbps or 100 W, the extra headroom will not be used.

Highlights

  • Charges up to 240 W with PD 3.1
  • Transfers data at 40 Gbps with USB4 Gen3
  • Drives 8K at 60 Hz or dual 4K at 60 Hz
  • E-Marker chip regulates power and protects devices
  • Braided 3.3 ft cable works with Thunderbolt 3 and 4

Specifications

No published specifications for this item yet.

Other versions of this model

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Questions about this item

How do I install the SMUGDESK USB4 cable and what step do people often get wrong?

Plug the USB-C connectors firmly into both devices until they click; the step people miss is confirming the host port supports DP Alt Mode and USB4 Gen3, otherwise video and 40 Gbps data will not activate.

What maintenance or replacement will this cable need later?

The braided jacket and E-Marker chip require no scheduled maintenance; replace the cable only if the connectors become loose, the sheath frays, or a connected device stops negotiating 240 W or 40 Gbps.

What limit appears first under sustained heavy use?

The 240 W (48 V / 5 A) power ceiling is the first hard limit; if the charger or device requests more current the E-Marker chip caps delivery, so sustained loads above 240 W are not possible.

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