alt Hacker NewsNo, I don't get it. Firstly, the normal system command output is not hard to read, but secondly, this output doesn't list any of the capabilities of the cables, just the devices at the ends of them. Perhaps showing an example of the output when the device is plugged in through the wrong cable would have helped. Does the tool produce a similar warning to the system popup, that is "this cable and device are mismatched"?
As far as I understand, the idea is to determine whether the cable is the bottleneck from a hardcoded list of theoretical device capabilities with actually observed connection speeds as reported by the OS.
It would be nice to just compare with the device's reported maximum capability, but I'm not sure whether macOS exposes that in any API.