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Thread: charging questions

  1. #1
    Soundwave
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    charging questions

    I bought a 3.0 USB as recommended by people on here. I just wanted to make sure there was no safety issues plugging this from the AC adaptor to the USB port (and does it matter which one?) Or from another computer /airplane USB to my tf USB. I guess I am confused by what the 3.0 v 2.0 USB means and if there is any risk of damage to my tf.

  2. #2
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    Quote Originally Posted by Boeing777 View Post
    I bought a 3.0 USB as recommended by people on here. I just wanted to make sure there was no safety issues plugging this from the AC adaptor to the USB port (and does it matter which one?) Or from another computer /airplane USB to my tf USB. I guess I am confused by what the 3.0 v 2.0 USB means and if there is any risk of damage to my tf.
    Need not worry. The 3.0 USB cable has additional wires used for charging the TF when used as an extension. The one I use is more substantial then the one Asus supplies. You should not have any issue.

  3. #3
    Ratchet
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    Can I ask where you brought yours from please, link?.

  4. #4
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    Quote Originally Posted by tofu View Post
    Can I ask where you brought yours from please, link?.
    I bought mine here in Thailand but most of the online retailers have them

  5. #5
    TRANSFORMER FORUMS LEGEND
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    There are no concerns in using the USB 3.0 extension cable to charge your TF from the wall charger, or any other USB port (even on a plane) just keep in mind using anything but the stock charger will yield a painfully slow (~3% per hour with the screen off) charge.

    Here is an explanation of USB 2.0 VS. 3.0:

    USB 2.0 uses 4 pins as shown here:


    USB 3.0 uses 9 pins as shown here:


    The TF charger uses some of these additional 5 pins to detect if the device connected is a Transformer. If this IS detected, the charger outputs 15 VDC. If it is NOT detected, the charger will output the standard USB 5 VDC.

    Using a USB 2.0 cable will cause the charger to output 5 VDC and a slow charge will ensue and the charger will not show that it is charging.

    Using a USB 3.0 cable will allow the charger to detect the TF is connected when using a longer cable.
    Principe likes this.


    Asus Transformer 16 GB & Dock - Munching on Jelly Beans
    crApple iP*one 5 - Stock

    Just once I want someone to call me Sir without adding you're making a scene.
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  6. #6
    Jazz
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    Hi, so the benefits of using a new 3.0 usb is faster charge time?

  7. #7
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    Quote Originally Posted by kohkindachi View Post
    Hi, so the benefits of using a new 3.0 usb is faster charge time?
    No, just to extend the short cable supplied with the TF

  8. #8
    TRANSFORMER FORUMS LEGEND
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    Quote Originally Posted by kohkindachi View Post
    Hi, so the benefits of using a new 3.0 usb is faster charge time?
    I wanted to clarify Jeffrey's response a bit.

    Using a USB 3..0 cable with the included wall wart charger and cable, the charge time will not be any faster than if you were using the wall wart witht he included charger cable.

    If you were to extend the USB cable by using a USB 2.0 cable, the charge time would be between 10-30 hours. Using a USB 3.0 cable to extend the short cable the charge time will be in the 2.5-3 hour range for the tablet.


    Asus Transformer 16 GB & Dock - Munching on Jelly Beans
    crApple iP*one 5 - Stock

    Just once I want someone to call me Sir without adding you're making a scene.
    - Homer Jay Simpson

 

 

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