Bitmoor Launches WhatCable to End the USB-C 'Cable Lottery' on macOS

Bitmoor has released WhatCable, a macOS menu bar application designed to diagnose the actual hardware capabilities of USB-C cables. The tool aims to eliminate the guesswork associated with identical-looking cables by providing real-time verification of performance specifications.

WhatCable identifies data transfer speeds, power delivery capabilities, and display paths by reading macOS system reports. Rather than relying on often-confusing product packaging, the app pulls data directly from the system to tell the user exactly what the connected cable supports. The software is signed, notarized, and available in 19 languages. It is compatible with Apple Silicon Macs running macOS 14 or later and is offered in both an open-source and a Pro version.

The USB-C Identification Problem

USB-C has become the universal physical standard for connectivity, but the underlying specifications vary wildly. A single cable design may support USB 2.0 speeds while another supports Thunderbolt 4, and charging capacities can range from 60W to 240W. Because these cables are visually indistinguishable, users frequently encounter unexpected bottlenecks in data transfer or charging speeds. Without a diagnostic tool, it is often impossible for a consumer to determine if the cable, the port, or the connected device is the limiting factor in their hardware chain.

Why Hardware Transparency Matters

As the industry moves toward a unified port, the proliferation of overlapping standards—including USB 3.2, USB4, and various iterations of Thunderbolt—has created a "cable lottery" for the average user. This complexity often leads to frustration when high-end peripherals underperform due to an inadequate cable. By providing transparent, real-time hardware verification, WhatCable allows users to optimize their workstations and avoid the cost of purchasing unnecessary hardware or spending hours troubleshooting phantom performance issues.

The Path to Transparency

While WhatCable provides a solution for the macOS ecosystem, the availability of similar tools for other operating systems remains a point of uncertainty. Users currently relying on Apple Silicon and macOS 14+ can utilize the tool to audit their existing cable collections and ensure their hardware is performing at its peak. The emergence of similar diagnostic utilities for other platforms will be key to solving the USB-C transparency problem on a broader scale, moving the industry away from guesswork and toward verifiable hardware standards.