Enfain USB4 Type-C male side bend turn Type-C female ear screws fixed panel extension cable 3m

USB4 extension cable for 8K workflows

This three-metre USB4 cable carries 40Gbps bandwidth and supports 8K resolution at 60Hz for professional video setups. It delivers up to 240W of power to charge laptops and peripherals through a single connection. The side-bend male connector and screw-fixed female panel mount suit tight rack or desk installations. It is built for creators and engineers who need long-reach, high-speed links without signal loss.

Practical limits of the USB4 standard

The USB4 specification defines a maximum passive cable length of 1.2 metres; this 3m assembly exceeds that limit so actual throughput may fall below the 40Gbps ceiling. Real-world reads reach 2.8GB/s and writes 2.1GB/s when both host and device support the full protocol. Thunderbolt 3 compatibility is maintained, but a 2.5GB file transfer in one second is only theoretical. Performance depends entirely on the connected endpoints.

Upgrading from shorter or slower cables

This cable replaces standard 1.2m USB4 or Thunderbolt 3 leads when the workstation sits farther from the dock or monitor. It also supersedes USB 3.0 cables that cap at 5Gbps and cannot drive 8K displays or 240W charging. The jump is worth it when you need panel-mount security, 8K60 video, and laptop power over a single three-metre run. It is not for buyers who need guaranteed 40Gbps at this length or who require active optical extension beyond three metres.