On 10/30/2014 3:16 AM, Johann Spies wrote: > This is not Debian specific, but as I experienced it on Debian and > initially thought that it might be a Debian problem, it may help some > other users. > > I recently bought the scanner specified in the subject line after > reading that the saned team claims it has "complete" support. I first > tried it out on my Desktop which has something like 8 usb2 ports. I had > limited success and was frustrated. Then I took it to work and tested > it with my work laptop with 4 usb2 ports and it worked without a problem. > > At home I tested it on my other Debian laptop which have two usb3-ports > and two usb2 ports. On the USB-3 port I experienced the same problems I > had on my Desktop. Moving the connection to a usb2-port everything > worked as expected. > > My thought on this is that on the Desktop there was not enough power > coming through the usb-port and on the usb3-port there the power was too > much. > > This scanner only works with the electricity it gets through the > usb-connection. > > Regards > Johann > > -- > Because experiencing your loyal love is better than life itself, > my lips will praise you. (Psalm 63:3)
There is no such thing as "too much" power, as long as the voltage is the same. The scanner will only draw what it needs at a particular voltage. As long as the source provides sufficient power, it should work. "Too much power" would be like plugging your TV into a 15 amp circuit and it works fine. But plugging it into a 20 amp circuit (more power available) would cause it not to work. It doesn't happen. Jerry -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/545261dc.7020...@attglobal.net