MOUSE and KEYBOARD common power consumption

[andre_luis]

Hi guys,



I´m working on an embedded design in which power supply must be as small as possible.
In order to allow compatibility with most USB devices intended to be used, I wish know what are its usual power consumption.

Taking a look on the Web to find the answer, search result is saturated with Wireless ones, that will not indeed be used.
Someone could provide some information about consumption ( Keyboard / Mouse / Webcam ) ?


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[tpetar]

What I know typical standard USB keyboard up to 50mA, USB mouse up to 15mA, USB WebCam up to 500mA.

But all depends from models to models, one little example: WebCam have or dont have IR diodes and how many ? Keyboard have lots of LEDs,...

You can use ampermeter to measure current consumption of each device.



Best regards,
Peter