Review: USB-C cable tester by BLE caberQU

USB-C has firmly established itself as the universal connector standard, integrating data transfer, power delivery, and video output into a single interface. With so many cables on the market, knowing which ones truly deliver on their promises can be challenging. That’s where the BLE caberQU comes in, a great USB-C cable tester that provides the details most people never realize they’re missing.

We can break down the need to test USB-C cables into five categories. And it’s worth saying out loud: if you’re going to spend good money on a device, monitor, or peripheral, isn’t it worth a bit of effort to make sure the cable connecting everything actually performs at the level it claims?

The blockbuster category is USB-C data transfer speed. Different USB-C cables support very different throughput. Some are limited to USB 2.0 (480 Mbps), while others support USB 3.1 or USB 3.2 (up to 10 or 20 Gbps). Testing confirms you’re getting the performance you paid for, especially when moving large files or working with external storage.

The BLE caberQU excels at its core purpose. It provides a reliable way to test USB-C cables for data speed, charging capability, and overall health. The LED indicators offer a clear visual of pin connectivity, which simplifies troubleshooting. The LCD screen takes things further, providing detailed metrics about the cable being tested.

The second most important category is compatibility. Not all USB-C cables are created equal. Some won’t properly support higher-speed protocols like Thunderbolt 3 or 4, which can affect everything from monitor output to dock behavior. The BLE caberQU offers a systematic way to determine the true protocol capability of a cable. Because some marginal cables can produce inconsistent results, testing a cable multiple times is recommended to ensure the reported values are accurate.