# This Free Mac App Can Analyze Your USB-C Cable Performance

Discover the charging and data transfer speeds of your cables with WhatCable.

- **Source:** [Lifehacker](https://brifing.si/source/f1400ced-a26b-4e58-a567-6187eca3708d)
- **Published:** 2026-07-13
- **Topic:** [Product Management](https://brifing.si/c/product)
- **Original article:** <https://lifehacker.com/tech/whatcable-mac-app?utm_medium=RSS>
- **On Brifing:** https://brifing.si/s/872b1be2-b519-41a9-9efe-3d2dc1afa2d6

## The Complex World of USB-C Cables

USB-C cables operate with various standards and protocols, making it challenging for users to choose the right one. WhatCable simplifies this process by analyzing cable specifications and performance.

## Factors Affecting Charging Speed

Slow charging on your MacBook could be due to the charger or USB-C cable. WhatCable explains these factors in detail and helps optimize your charging speed.

## The Connection Triangle: Port, Cable, and Device

For optimal performance, the three elements of a connection (port, cable, and device) must support the same standards. WhatCable checks compatibility and identifies issues.

## USB-C vs. Thunderbolt

USB-C ports support different protocols like Thunderbolt and DisplayPort. WhatCable shows which standards connected cables meet and flags incompatibilities.

## Analyzing Cables with WhatCable

WhatCable displays charging speed, data transfer rate, and e-marker information for connected USB cables, helping users evaluate performance.

## The Importance of Choosing the Right Cable

WhatCable clearly highlights the differences between cheap and high-quality cables, offering a significant advantage for users expecting top performance.

## Sources covering this story

- https://lifehacker.com/tech/whatcable-mac-app?utm_medium=RSS — 

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_Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._