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  1. #11
    GPSPower Helper

    Join Date
    Apr 2011
    Rep Power


    Lolypop hi! I do not understand your proposal to check the problem.
    In my measurements, all with original cables garmin and different gps, all working fine, I got the following results from the hidden USB Device menu:

    1. In "USB Device": Power Cable and in "USB ID": 1A - 1.43 V (power connected)
    2. USB Device: Serial Host (GTM36 and 25 cable) and USB ID:1A - 1.64 V (power connected)
    3. USB Device: Type-B USB (USB PC cable) and USB ID:500mA - 2.25 V (PC connected)
    Last edited by angelozip; 22nd July 2012 at 11:38 PM.
    Nuvi 2689; 3490; Etrex 30; Oregon 200 (from Approach S5)

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  3. #12
    Junior Member
    Join Date
    Jul 2012
    Rep Power


    Quote Originally Posted by lolypop000 View Post
    Go to hidden menu over battery icon and look beside USB what is writen.

    Do you have 500mA or do you have 1A?

    If you have 500mA then something is wrong with your pc if you have 1A then something is wrong with your cable.
    Do you have cable like this beside number 1 or 2:

    [Only registered and activated users can see links. ]

    beside the USB ID shown 1.69V without usb, but when plusgged with usb it change to 0.22, 1,30, 1,2 ( with 3 other cables). the cables works fine on other nuvi 1100. By the way sometimes when this nuvi 255w plugged with usb i can enter usb storgae mode.. but it to short and most of the times it wont go to usb mode.


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