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One-foot USB 4.0 Type-C extension cable, straight male-to-female, 240W PD, 40Gbps, 8K@60Hz support

BUCIER

BUCIER USB 4.0 Type C Extension Cable 40Gbps 240W 1ft

SKU CH-CB1V-Y3RE3

A 1-foot USB 4.0 Type-C extension cable delivering 40 Gbps data, 240 W power and 8K@60 Hz video

  • Rated speed40 Gbit/s
  • Connection typeUSB Type C
  • Connector count48
  • Connector detailsUSB Type C
  • Connector genderMale-to-Female
  • Apple compatibilityCharging Adapter
  • 40 Gbps data transfer moves 2.5 GB files in one second
  • 240 W Power Delivery charges laptops and phones at full speed
  • 8K video at 60 Hz output to a single display
  • Thunderbolt 3 protocol support for docks and eGPUs
  • Male-to-female extension adds reach without signal loss

What this cable does

This USB 4.0 Type C extension cable adds one foot of reach while carrying 40 Gbps data, 240 W power delivery and 8K video at 60 Hz. It connects a male USB C plug to a female USB C receptacle so smartphones, laptops and Thunderbolt 3 hosts keep full bandwidth.

How the spec changes use

The 48 V / 5 A rating lets the cable charge almost any USB C device at maximum speed, while the 40 Gbps link moves a 2.5 G file in roughly one second. Real-world reads reach 2.8 GB/s and writes 2.1 GB/s when both host and device support those rates.

Limits of the USB 4.0 interface

Actual throughput depends on the host and device capabilities; not every port delivers the full 40 Gbps or 240 W. Dual 4K monitors require two separate cables, and the 48-pin connector count means the cable cannot exceed the electrical limits defined by the USB 4.0 standard.

How it compares

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

Price $18.99
Pricier than about 73% of the 15,227 comparable items (median $14.99).

Specifications

Product
Brand nameKework
Product typeUSB
Performance
Rated speed40 Gbit/s
Ports & slots
Connection typeUSB Type C
Connector count48
Connector detailsUSB Type C
Connector genderMale-to-Female
Size & build
Build detailsCopper
Compatibility
Apple compatibilityCharging Adapter

Questions about this item

Will the 240W USB 4.0 cable wear out and need replacing?

The copper construction and 48-pin connectors are built for repeated mating cycles; no periodic maintenance is required beyond keeping the contacts clean.

What limits sustained 40Gbps throughput on this 1ft extension?

Actual sustained speed tops out at 2.8GB/s reads and 2.1GB/s writes, so the host or device controller becomes the bottleneck before the cable does.

Does the cable get hot or draw extra power during all-day 240W charging?

The 48V/5A rating means the conductors are sized for continuous 240W delivery; no active cooling is needed and the cable itself adds negligible heat.

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