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