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Black USB-C to USB-C cable coiled, 5FT length

SMUGDESK

SMUGDESK USB4 Cable 40Gbps 240W 8K 5FT

SKU CH-Q937-A4VN3

A USB4 cable delivering 40Gbps data, 8K video at 60Hz and 240W charging over 5 feet

Cable Length 5 Feet

  • Charges compatible laptops at up to 240W via USB PD 3.1 EPR
  • Transfers data at up to 40Gbps on supported USB4 and Thunderbolt hosts
  • Drives 8K displays at 60Hz using DisplayPort Alt Mode
  • Works with Thunderbolt 4, Thunderbolt 3 and legacy USB 3.2, 3.1, 3.0, 2.0 devices
  • Five-foot length suits desk and travel setups

One cable for work and entertainment

This USB4 cable delivers up to 40Gbps bandwidth, 8K video support and up to 240W charging in a single connection. It suits professionals who need high-speed data, high-resolution display output and fast power delivery for laptops, tablets and external SSDs. The five-foot length covers typical desk setups without excess slack. It is not for buyers who need longer runs or angled connectors for tight ports.

Sustained 40Gbps bandwidth with 240W power delivery

Under continuous load the cable maintains 40Gbps transfer rates when both host and device support that speed, and it carries up to 48V at 5A for 240W charging without throttling. Backward compatibility handles 20Gbps USB4, USB 3.2, 3.1 and 2.0 devices at their rated speeds. Video output holds 8K at 60Hz or dual 4K displays through DisplayPort Alt Mode. It does not suit users whose hardware tops out at lower USB standards and will not gain extra speed.

Plug-and-play USB-C to USB-C with reversible ends

Both ends are standard USB-C so installation is a simple insertion either way up; no drivers or firmware updates are required. The cable works with Thunderbolt 3 and 4 docks, monitors and power adapters including 140W units. Common issues arise only when a connected device lacks USB4 or PD 3.1 support, limiting speed or wattage to that device's capability. It is not for setups that require legacy USB-A or proprietary connectors.

How it compares

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

Price $17.99
Pricier than about 70% 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 240W charging capability generate noticeable heat when the cable runs at full load all day?

The cable supports USB PD 3.1 Extended Power Range up to 48V/5A for 240W delivery; heat will depend on the charger and device negotiating that rate, not on the cable alone.

What must my laptop or charger already support to actually reach 240W over this cable?

Both the power source and the receiving device need to implement USB PD 3.1 EPR at 48V/5A; without that handshake the cable will fall back to lower voltages such as 28V/140W or 36V/180W.

Will this cable drive an 8K@60Hz monitor from a Thunderbolt 3 laptop port?

The cable is backward compatible with Thunderbolt 3 and supports DP Alt Mode for 8K@60Hz, but the host port must also provide 40Gbps bandwidth and DSC to output that resolution.

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