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LUOM

LUOM USB C to USB C Cable 40Gbps 240W 48V 5A Grey 4FT

SKU CH-WJY9-CJ0PF

A USB-C cable delivering up to 240W power, 40Gbps data and 8K 60Hz video over 4FT

  • Connector TypeUSB C to USB C
  • ColorGrey
  • Thunderbolt 3Yes
  • Terminal GenderMale to Male
  • Apple CompatibleUSB-C port

Cable Length 4 Feet

  • Charge laptops at up to 240W with PD 3.1 EPR support
  • Transfer large files at 40Gbps using USB4 Gen 3x2
  • Connect an 8K display at 60Hz over a single cable
  • Works with Thunderbolt 4 and Thunderbolt 3 hosts and devices
  • Reversible USB-C connectors plug in either way up

What this cable is and who it suits

A USB C to USB C cable built to the USB4 Gen 3x2 standard with Thunderbolt 3 compatibility. It carries up to 40Gbps of bi-directional data and supports 240W power delivery at 48V and 5A. The 4FT grey male-to-male cord works with Apple USB-C ports, external SSDs, eGPU enclosures and USB-C docking stations. Buyers who need a longer run than four feet or a right-angle connector will need a different cable.

Behaviour under sustained load

The cable maintains the full 40Gbps data rate and 240W power flow during extended transfers or charging sessions. Real-world throughput reaches 2.8GB/s read and 2.1GB/s write when paired with USB4 Gen 3x2 devices. It remains backwards compatible with 180W, 140W, 100W and 60W power profiles, so a MacBook Pro 16'' drawing 140W charges at full speed without throttling. The extended power range ensures stable voltage across long workloads.

Build quality and daily connectivity

Reversible USB-C plugs on both ends make orientation irrelevant when connecting docks, monitors or storage. The cord supports single-display output up to 8K at 60Hz or dual 4K displays using two cables. Broad protocol support covers PD 3.1, PD 3.0 PPS, PD 2.0, QC 4.0, QC 3.0, AFC, SCP and FCP, so one cable handles phones, accessories and high-power laptops alike. Grey jacket resists visible wear in daily desk use.

Highlights

  • Charge laptops at up to 240W with PD 3.1 EPR support
  • Transfer large files at 40Gbps using USB4 Gen 3x2
  • Connect an 8K display at 60Hz over a single cable
  • Works with Thunderbolt 4 and Thunderbolt 3 hosts and devices
  • Reversible USB-C connectors plug in either way up

Specifications

Connector TypeUSB C to USB C
ColorGrey
Thunderbolt 3Yes
Terminal GenderMale to Male
Apple CompatibleUSB-C port

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Questions about this item

Does the 240W cable get warm or draw extra power during all-day 40Gbps transfers?

The cable is passive and rated for 48V/5A; it carries whatever the host and device negotiate, so heat and power draw depend on the connected hardware, not the cable itself.

What charger and device must I already own to reach the 240W rating?

You need a 240W EPR PD 3.1 charger and a device that accepts 48V/5A; the cable is backward compatible with 180W, 140W, 100W and lower profiles.

Will this cable run at 40Gbps with my Thunderbolt 3 dock and external SSD?

Yes — it supports USB4 Gen 3x2 and Thunderbolt 3, so a Thunderbolt 3 dock and compatible SSD will operate at up to 40Gbps bi-directional.

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