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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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How to monitor USB power consumption? – Ask Different

Posted by jpluimers on 2025/11/10

TL;DR: it is impossible on a Mac to accurately measure power usage by attached USB devices. Only a general indication is possible, but it is unreliable.

[Wayback/Archive] How to monitor USB power consumption? – Ask Different

  • System Profiler needs manual refresh and is a very rough indication
  • iStatMenus is a graph, but not very accurate
  • Activity Monitor is even rougher than the above

Related: [Wayback/Archive] View energy consumption in Activity Monitor on Mac – Apple Support (UK)

Via: [Wayback/Archive] macos view usb power usage – Google Search

–jeroen

This entry was posted on 2025/11/10 at 12:00 and is filed under Apple, Mac, MacBook, MacBook Retina, MacBook-Pro, Power User. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

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