This article covers Cable Matters USB4 0.5m 40Gbps 延長ケーブル.

Overview

The Cable Matters USB4 0.5m 40Gbps Extension Cable is a USB Type-C male-to-female extension that lets you extend your existing USB-C or Thunderbolt cable without sacrificing performance. It supports up to 40Gbps data transfer, maintaining full USB4 and Thunderbolt 4/5 bandwidth. It also handles 8K@60Hz or 4K@240Hz video output and delivers up to 240W Power Delivery charging, making it suitable for high-end monitors and fast charging of laptops. The short 0.5m length is ideal for small desk setups or tidying up connections between a docking station and a device.

Connectivity & Compatibility

Featuring USB-C male-to-female connectors, this extension works with any standard USB-C or Thunderbolt cable. It is fully compatible with USB4 (40Gbps) and Thunderbolt 4/5, and backward compatible with USB 3.2/3.1/3.0/2.0 devices. It is also verified to work with Nintendo Switch 2. As an extension cable, performance depends on the connected cable and device; the short 0.5m length minimizes signal degradation in practice.

Product Info

Cable Matters is a well-known US-based brand for cables and accessories, offering reliable build quality. This product is priced at approximately ¥1,699 on (as of May 2026), which is very affordable for a USB4 extension that preserves full 40Gbps speed, 240W PD, and 8K video. It sits in the entry-to-mid-range segment, delivering excellent cost performance. Warranty is provided by the manufacturer (typically limited lifetime), and the package includes only the cable. It is available through and the Cable Matters official store.

Best Use Cases

Users needing a bit more reach between a docking station and a laptop: simply plug this extension to add 0.5m without losing speed or power delivery. Owners of 8K monitors or high-refresh-rate 4K displays: the cable maintains full 40Gbps bandwidth for uncompressed video signals. * Those who charge high-power laptops (up to 240W): supports fast charging for MacBook Pro, gaming notebooks, and other PD 3.1 devices.

Product Disclosure (Amazon)

  • Manufacturer: Cable Matters
  • Seller: Cable Matters Japan
  • Fulfilled by: Amazon
  • ASIN: B0CP9WH1BV
  • Note: This article covers a manufacturer-made product based on Amazon listing details.