On 1/23/24 20:30, Ted Mittelstaedt wrote:
That isn't a measured power draw.  It's what the device tells the
host that it needs.  The actual power usage is likely much lower.

This is correct. MaxPower is a fixed value that is set in USB device's descriptors. It does *not* reflect the current actually being drawn. Here's another link that might be useful.

<http://dangerousprototypes.com/docs/Designing_USB_Devices_for_proper_current_and_MaxPower>

galen
--
Galen Seitz
gal...@seitzassoc.com

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