40Gbps USB4 Extension Cable 1.6ft, Thunderbolt 4/5 Compatible

If you’re looking to extend the reach of a USB4 or Thunderbolt 4 device without sacrificing performance, the Cable Matters 40Gbps USB4 Extension Cable is an excellent option to consider. Its robust build, short length, and compliance with high-end specs make it a reliable choice for demanding setups—whether you’re connecting 8K displays, external SSDs, or high-powered docking stations. Key Features 40Gbps USB4 / Thunderbolt 4 Speed Officially rated for up to 40Gbps data throughput, meaning you can transfer large files quickly and maintain the full speed of external SSDs or other high-bandwidth peripherals. Backward compatible with Thunderbolt 3, USB-C 3.x, and USB 2.0 devices, so it works well even with older gear. High-Resolution Video Support Supports 8K@60Hz or 4K@240Hz, making it a solid pick for cutting-edge displays or high refresh rate monitors. Ideal for content creators, gamers, or professionals needing top-tier resolution and fluid motion. Compact 1.6-Foot Length Short, tidy extension for tight spaces or cable management. Minimizes potential signal degradation that can occur with longer cables, helping ensure maximum performance. Perfect for bridging a small gap between a desktop port and a device without excessive cable clutter. Durable Construction Cable Matters has a solid reputation for producing sturdy cables, and this one is no exception. Reinforced connectors and a thick cable jacket provide extra protection against daily wear and tear. Performance & Reliability Stable Connection: During testing with a Thunderbolt 4 dock and an 8K monitor, the extended cable maintained consistent data rates and video signals. There was no flickering, stuttering, or unexpected disconnects. Broad Device Compatibility: Plugging in various devices—like external SSDs, VR headsets, and high-powered docking stations—worked smoothly. In each case, the cable extension retained full functionality and speed. Minimal Latency: Even with resource-intensive tasks (like video editing off an external SSD), latency stayed effectively negligible. Users who rely on real-time data (such as audio engineers or gamers) shouldn’t notice any performance hit. Use Cases High-Resolution Monitors: If you need a little extra reach between your PC/Mac and an 8K or 4K display—especially with high refresh rates—this extension cable maintains the full bandwidth for crisp visuals. External SSD Enclosures: For large data transfers or on-the-go editing, the extension ensures you’re not losing speed if the built-in cable is too short to reach your workstation comfortably. Thunderbolt/USB4 Docking Stations: Extend that short built-in cable on your dock without hindering its full range of ports and performance. VR/AR Headsets: Keeping your VR headset cord at an optimal length is much easier with a short extension that can handle high data rates. Pros & Cons Pros Full 40Gbps Speed – Zero noticeable drop in performance for data-heavy tasks. 8K@60Hz or 4K@240Hz Support – Great for ultra-high-definition setups. Robust Build Quality – Reinforced connectors and thick cable jacket for longevity. Short, Manageable Length – Ideal for close-range devices or tight desk spaces. Cons Limited Length – At only 1.6ft (about half a meter), it’s specifically designed as a short extension; if you need more reach, you’ll need a different solution or multiple cables. Premium Price – USB4/Thunderbolt 4 cables can be pricier due to stringent certification and higher specs, which might be overkill if you only need basic USB-C speeds. Final Thoughts For anyone needing to extend a USB4 or Thunderbolt 4 connection without losing any of the top-tier features—like 40Gbps transfers, 8K video output, or robust power delivery—the Cable Matters 40Gbps USB4 Extension Cable (1.6ft) is a compelling choice. It’s well-made, reliable, and ensures your high-end devices and peripherals operate at full speed. If you have a tight setup where every inch matters and want to maintain maximum performance, this short extension cable is highly recommended.

Works perfectly with the Switch 2. Fast, with no signal degradation, which is exactly what you want where large amounts of data have to travel very fast between a modern console and your TV. Also, Nintendo uses proprietary technology in their consoles. When you add cables like these into the chain of data, the Nintendo Switch 2 dock essentially gives the cable a ‘handshake’ before allowing it to transmit data - which is why you can’t just use any USB-C cable. Cable Matters is the gold standard for pro-grade cables without a ludicrous price tag. It has become one of my go-to-brands and you can actually trust their specs. The cable is stiff, and that’s also by design. It’s what you’re looking for with a cable like this. More and thicker copper wiring and heavy duty shielding to not cause interference with your WiFi and Bluetooth. If you have to go with a longer cable, I wouldn’t go past 3ft tops for the Switch 2 as an extension cable from the dock to the console. I went with 1.6ft because it’s around the ‘ideal’ length with the least risk of signal loss for the Switch 2.

I purchased the Cable Matters 1.6 ft 40Gbps USB-C extension cable paired with the Cable Matters flat right-angle USB-C adapter to extend the cable of my Lenovo 7-in-1 hub. They’ve provided a 100% reliable connection between the hub and my laptop's peripherals, including HDMI to an external monitor, three external USB-C hard drives, a headset, and an external DVD drive. The hub’s built-in cable, at only 5 inches long, forced everything to pile up on the left side of the laptop creating a huge rat’s nest of cables. With the Cable Matters extension and right-angle adapter, I was able to move the hub behind the laptop, completely out of the way, which greatly improved both desk organization and day-to-day usability. I’ve tried several other USB-C extension cables before these. They all worked for a few weeks or even a couple of months but eventually failed. I suspect they simply couldn’t support the bandwidth demands of this setup. So far, the Cable Matters extension and right-angle adapter have worked perfectly since August of 2025. I highly recommend these products!!

I purchased this cable for use in my car. I have a USB port on the back of the center counsel that I wanted to use in the front seat. This cable was what the doctor ordered. It is the perfect length and can be hid between the seat and center counsel.

Works fine as a docking station extension.

I had trouble finding a USB-C extension cable that would reliably work between my MacBook and 7-in-1 ugreen dock. Many would work initially but not long-term. This one though fits the bill well. It has worked reliably, supports all my peripherals, supports hidef video at high refresh and properly passes through charging current.

Good quality cable, transfers data, HDMI and is able to connect my wireless mouse effectively.

The sleeve is flimsy and tends to crease a lot, and the cable itself is very stiff. Bending it doesn’t give a sense of security. Other than that it works.

It is working as expected. I connect usb c hub to it. Only issue is manufacturing year was 2014.

Funktioniert perfekt mit meiner TB4 Docking Station

Works well, does the job.

I use this as an extension for my thunderbolt dock. It delivers power, hdmi, audio, keyboard ect at the same time with zero issues Mu forst cable matters product amd I have no issues

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