A free Mac utility that reveals exactly what's plugged into each USB-C, Thunderbolt, and MagSafe port.
Cable Detective
A free Mac utility that reveals exactly what's plugged into each USB-C, Thunderbolt, and MagSafe port.
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What it does
Cable Detective is a small, on-device Mac utility designed for Apple Silicon Macs that provides detailed diagnostics for USB-C, Thunderbolt, and MagSafe ports. It reads the macOS I/O Kit registry to show power direction and wattage, DisplayPort lane state, cable identity (e-marker reads), and USB transport details (e.g., USB 2.0 vs. 3.x vs. USB4 vs. Thunderbolt). The app also features an optional, on-device Apple Intelligence layer to summarize reports in plain English, ensuring privacy with no network, telemetry, or cloud usage.
Who it helps
Apple Silicon Mac users, tech enthusiasts, IT professionals, and anyone troubleshooting connectivity issues with USB-C, Thunderbolt, or MagSafe accessories and cables.
Why it's interesting
This utility addresses a common frustration for Mac users by demystifying identical-looking USB-C ports and their varied behaviors. Its commitment to privacy, being entirely on-device and free, builds significant goodwill. The clear, detailed diagnostics and optional AI-powered explanations offer a practical solution to a recurring pain point, showcasing strong product-led development.
Card stats
AI-assisted scores estimated from public website information only.
FounderDeck estimate
Low confidenceCable Detective is a highly polished, genuinely useful Mac utility that solves a common, frustrating problem for Apple Silicon users. Its explicit 'free' and 'no monetization' model, while admirable for users, means it lacks direct revenue potential as a standalone startup. The $25,000 estimate reflects the significant value of its intellectual property, the clear problem it solves, and the high-quality execution, positioning it as a strong portfolio piece or a valuable lead generator for future projects from the developer.
Valuation date: 2026-06-05. Estimate generated from public signals.
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