Darryl Morley:

WhatCable explains cable speed, charging limits, e-marker data, and connected devices in plain English. Name a cable and it tracks how the cable actually performs over time, so you can spot the one that has started misbehaving. No more guessing why a cable charges slow or refuses to drive your display.

Via Norbert M. Doerner:

It is open source, free, and definitely a tool to look into, if you have external drives on your Mac!

Previously:

• Script to Detect Slow USB-C Cables
• USB-C Cables Comparison

Update (2026-07-10): Dan Moren:

For example, after looking at it, I realized that my backup drive was only connected via a USB2 cable. Fine in general for overnight backups, but when it reminded to me when I was troubleshooting some backup issues that maybe I should switch to a high speed cable that supports USB-3.

[…]

For a £9.99 one-time purchase, you can unlock WhatCable Pro, which works on up to two Macs, lets you assign names to cables so you can remember which one it is when you plug it in later, provides more in-depth diagnostics, offers live power metering to see how much juice is being delivered right now, and even more.

Iran claims it will charge US tech companies fees for using undersea Internet cables that run beneath the contested Strait of Hormuz shipping lanes. The war has already halted multiple projects and led to the suspension of cable repairs in the region—and the latest Iranian threats may accelerate efforts by Big Tech and Gulf countries to find alternative routes for bypassing the Strait of Hormuz’s digital chokepoint.

The latest assertions of Iranian authority over the Strait of Hormuz were announced in a brief statement by Ebrahim Zolfaghari, a spokesperson for Iran’s military and the Islamic Revolutionary Guard Corps. “We will impose fees on internet cables” Zolfaghari wrote in a May 9 post. It was not immediately clear how Iran might implement such fees or impose its rules on cable projects, given that the majority of routes pass through Oman-controlled waters.

But Tasnim and Fars, both Iranian state-linked media channels, laid out more detailed proposals on how Iran could charge license fees to US tech giants for the use and maintenance of undersea cables carrying regional Internet traffic, according to The Guardian. For example, the Tasnim plan described charging tech companies—specifically naming Meta, Google, Amazon, and Microsoft—license fees for cable usage while also claiming that Iran alone has the right to repair and maintain the subsea cables.

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