Updated

Updated · Engadget · Jul 6

USB4 Cables Cost $20-$60, Delivering Up to 120 Gbps for Monitors, SSDs and Laptop Charging

Updated

Updated · Engadget · Jul 6

USB4 Cables Cost $20-$60, Delivering Up to 120 Gbps for Monitors, SSDs and Laptop Charging

Q: Your USB-C cable might be obsolete. How can you tell if you need an expensive USB4 upgrade?

You only need an expensive USB4 cable if your devices and workflow are hitting the limits of a basic USB-C cable. If you mainly charge a phone or do routine file transfers, upgrading is usually unnecessary. The warning signs are practical: large file transfers are slow, an external SSD never reaches advertised speeds, a monitor won’t light up or is stuck at low resolution or refresh rate, a dock behaves unpredictably, or a laptop charges too slowly. Those problems often mean the cable is an older or lower-spec USB-C cable, because USB-C describes the connector shape, not the performance. Cables that look identical can range from USB 2.0’s 480 Mbps to USB4’s 40 Gbps, 80 Gbps, or even 120/40 Gbps in USB4 Version 2. A USB4 cable makes sense if you want one cable to handle a laptop, external monitor, dock, fast storage and peripherals at once. It is also the safer buy when your computer or dock explicitly supports USB4, because it generally guarantees high-end data and charging performance and remains backward compatible with older USB-C gear. Check the cable itself and the product specs. Look for USB4 or Thunderbolt branding, speed markings such as 40G or 80G, and power-delivery ratings like 100W or 240W. Thunderbolt 4 and 5 are often interchangeable with USB4, but Thunderbolt certification usually guarantees stricter minimums, especially for video support. If your needs are only fast charging, a cheaper USB-C power-delivery cable is the better value.

Q: Is Thunderbolt 5's guaranteed performance worth the premium over the confusing options of standard USB4?

Yes—for buyers with demanding setups, Thunderbolt 5’s premium is justified because it removes much of USB4’s ambiguity and guarantees a higher performance floor. The key issue is not the USB-C connector but what sits behind it. USB4 can be excellent, but many of its best features are optional depending on the device or dock maker. Thunderbolt 5, by contrast, is a tightly certified implementation of USB4 v2. It guarantees 80 Gbps bidirectional bandwidth, a 120 Gbps display-focused boost mode, stronger minimum PCIe throughput for fast external storage, and higher assured power delivery. That matters most for creators and power users running multiple high-resolution, high-refresh displays, external NVMe drives, or heavy docking setups. Thunderbolt 5 is better suited to dual 8K or triple 4K/144Hz displays, faster PCIe Gen 4 storage, and single-cable charging up to 140W guaranteed, with support up to 240W. In those cases, the premium buys predictability as much as speed. For most people, though, Thunderbolt 5 is not necessary. A well-specified USB4 dock or cable is usually enough for a single 4K display, everyday peripherals, office work, and standard charging. USB4 v2 can match Thunderbolt 5 on paper, but buyers must check the fine print for display support, PCIe bandwidth, and power. So the premium is worth paying if your workflow can actually use the headroom and you want certainty. If not, USB4 remains the better value.

1 articles · Updated · Engadget · Jul 6

$20-$60 USB4 cables are pitched as worth the premium when one cable needs to handle charging, high-speed data and multiple peripherals instead of just topping up a phone.
USB4 supports up to 80 Gbps symmetric bandwidth or 120/40 Gbps under Version 2, enough to run external monitors, fast SSDs and docks while powering a laptop.
That matters because USB-C labels only the connector shape: cables can range from USB 2.0 at 480 Mbps to USB4, and bundled cables may bottleneck devices—Apple's iPhone 15 Pro Max ships with a USB 2.0 cable despite a 10 Gbps port.
USB4 and Intel's Thunderbolt 4 and 5 often overlap, but buyers are advised to match the cable to the device's supported standard to get full performance.
For users without USB4-capable hardware, cheaper USB-C power-delivery cables can still provide fast charging, making USB4 most useful for high-bandwidth setups rather than everyday charging alone.

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Engadget5h ago

Engadget Details USB4 Cable Capabilities, Cost, and High-Bandwidth Benefits

Your USB-C cable might be obsolete. How can you tell if you need an expensive USB4 upgrade?

Is Thunderbolt 5's guaranteed performance worth the premium over the confusing options of standard USB4?

With USB4 and Thunderbolt 5 promising huge speeds, is the universal 'one cable' dream finally dead?

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1 total

Left100%

Engadget5h ago

Engadget Details USB4 Cable Capabilities, Cost, and High-Bandwidth Benefits

USB4 Cables Cost $20-$60, Delivering Up to 120 Gbps for Monitors, SSDs and Laptop Charging

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