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Black coiled USB-C cable with male-to-male connectors, spring spiral form factor, matte finish

BUCIER

BUCIER USB 4.0 Type C Coiled Cable 3.9ft 40Gbps 240W 8K@60Hz

SKU CH-49C3-Y4QND

A coiled USB 4.0 Type C cable delivering 40 Gbps data, 240 W charging and 8K 60 Hz video in a 3.9 ft spring design

  • TypeUSB
  • Connector TypeUSB Type C
  • ColorBlack
  • Connector Number48
  • Connector DetailUSB Type C
  • Terminal GenderMale-to-Male
  • Transfers files at 40Gbps with Thunderbolt 4/3 support
  • Delivers up to 240W power for fast laptop charging
  • Drives 8K displays at 60Hz over a single cable
  • Coiled spring design keeps the desk tidy and extends to 3.9ft
  • Works bidirectionally for simultaneous data and power on USB-C devices

What this cable does

A USB 4.0 Type C coiled cable rated for 40Gbps bidirectional data, 240W Power Delivery and 8K video at 60Hz. It connects male-to-male USB Type C ports and is built with copper conductors. The spring spiral design extends to 3.9ft and retracts to keep a desk tidy. Intended for users who need high-speed transfer, high-power charging and display output in one cord.

How it fits a setup

The cable works with Thunderbolt 4 and Thunderbolt 3 hosts as well as USB 3.2, 3.1 and 3.0 devices. It carries 48V at 5A for 240W charging while simultaneously moving data, so a single connection can power a laptop and drive a monitor or dock. No separate power brick or video lead is required when both ends support the USB 4.0 feature set.

Behaviour under sustained load

Manufacturer figures quote up to 2.8GB/s read and 2.1GB/s write in real-world transfers, with a theoretical ceiling of 5000MB/s. The 40Gbps lane maintains throughput during long file moves rather than only in short bursts. Backward compatibility drops to the speed of the slowest linked device, so sustained rates depend on the host and peripheral capabilities.

Highlights

  • Transfers files at 40Gbps with Thunderbolt 4/3 support
  • Delivers up to 240W power for fast laptop charging
  • Drives 8K displays at 60Hz over a single cable
  • Coiled spring design keeps the desk tidy and extends to 3.9ft
  • Works bidirectionally for simultaneous data and power on USB-C devices

Specifications

BrandKework
ModelBYC
TypeUSB
Connector TypeUSB Type C
ColorBlack
Connector Number48
Connector DetailUSB Type C
Terminal GenderMale-to-Male
Speed40 gigabits_per_second
Apple CompatibleSmartphone
ConstructionCopper

Questions about this item

Will the 40Gbps data rate hold steady during a long file transfer or does it throttle?

The cable is rated for 40Gbps bidirectional transfer; actual sustained speed depends on the host controller, storage device and thermal limits of the connected hardware.

Does the coiled 3.9ft cable get warm or draw more power when running 240W charging all day?

It supports up to 240W (48V 5A) Power Delivery; heat generation is normal at high wattage and will vary with charger efficiency and ambient temperature.

What must my laptop and monitor already have for the 8K@60Hz video to work over this cable?

Both devices need USB4 or Thunderbolt 4/3 ports with DisplayPort Alt Mode and DSC support to drive 8K at 60Hz through this cable.

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