Previous 1 2 3 4 5 Next 73 Replies Latest reply: Jul 5, 2015 7:52 PM by sniperXpert Go to original post
  • Electricfx Level 1 Level 1 (0 points)
    Sorry gang, was just trying to help. Like I said I've never had an issue using it but as I also mentioned I've never tested it on other computers. I installed right after I got my original iPad at launch so ive been using it for quite a while now without issue. I agree you shouldn't use it with a usb hub or if you are already having freezing issues with iTunes. I'll remove my post if you think it will cause too much trouble for folks...
  • chcn Level 1 Level 1 (45 points)
    Electricfx wrote:
    ... I'll remove my post if you think it will cause too much trouble for folks

    Heavens no. It might be useful to someone. And now they can be fully informed and decide for themselves whether they want to use it.
  • JackKelly Level 1 Level 1 (0 points)
    I'm not sure that's true. Today I just got the iPad 2 (with wifi and Verizon 3G, 64GB) and I can sync it with my MacBook Pro 2.4GHz core duo (purchased in Q3 2007). But it won't charge via one of the USB ports directly on the laptop. I believe my USB ports are 2.0 on this computer.
  • chcn Level 1 Level 1 (45 points)
    2007 was a long time ago. I think the current Macs provide enough current.

    By the way, for those who are wont to talk about voltage, the voltage is still the same old 5VDC that USB has always been. All the has changed is the current that those ports will supply, in units of 100mA up to 500mA (USB 2.0), units of 150mA up to 900mA (USB 3.0), or 1.5A (new +Battery Charging Specification+*). This is determined by the version of the specification that is being followed and a negotiation process between the device and the host hardware. Up to 1.8A can be supplied and drawn for a dedicated charging port (like the wall adapters). At 5.25V this is 9.5W. The iPad wall adapter seems to take this to (or even a bit beyond) the limit, supplying 5.1V × 2.1A = 10.7W.

    *For the battery charging spec see the document cited here:
  • Wh0Else Level 1 Level 1 (0 points)

    It's wierd - I had an iPad 1, no problem charging it from USB on my 4 year old (late 2007?) Dell inspiron 1720. Likewise my iPhone 3gs charges perfectly off any PC, including this one.


    However my new iPad 2 (OS 4.3.3) just displays "Not Charging" from the same Dell laptop, so requires A/C charge. Disappointing, bit oif a step backwards, as the power cable is short enough that it's largely useless when being charged - my powerr points are not convenient for seats. And I prefer to leave large items charging only when I'm around, e.g. not overnight - old habit having seen an electrical fire once!


    Other than Asus drivers (which I'm passing on), does anyone know more? I believe my laptop is using USB2.


    Any thoughts?

  • Beatchica Level 1 Level 1 (0 points)

    Electrifx thank you for the Asus USB driver, it worked like a CHAMP on my Win 7 / Toshiba Satellite.


    For those of you who want to try this driver, simply perform a sys backup prior to installing it, so you can roll-back if needed. Control Panel\System and Security\System\System Protection\System Restore

  • gngr29 Level 1 Level 1 (0 points)

    Electrifx - thanks very much.  Works a gem on my Dell 1545.

  • GZukes Level 4 Level 4 (1,565 points)

    gngr29, Thanks for the info, and thanks to Electrifx for the link and info about the Asus driver! If it weren't for your post, I wouldn't even have considered trying the driver on my Dell Inspiron 1525.  Well gang, add the Inspiron 1525 to the list of laptops that works with Asus driver.

  • BigDadu Level 1 Level 1 (0 points)

    I can confirm that this works on a Dell Studio 17 running Windows 7 SP1 and the latest iTunes (at the time of writing) with my iPad 2.





  • DoubleAny Level 1 Level 1 (0 points)

    The Asus USB driver worked for me - knock on wood. As mentioned already - create a restore point before you install. Thanks!

  • Tchoules Level 1 Level 1 (0 points)

    Just for the record I have an iPad2 which charges fine with my Mac Mini unless I use Bootcamp and Windows 7 then it won't charge any more so I don't think this is a hardware issue.

  • ekholbrook Level 1 Level 1 (10 points)

    >Because Apple has designed their computers to output the necessary amount of power to charge the iPad. PC manufacturers have not.<


    That's just goofiness. I have 2 USB powered 500 gig removable drives, PLUS my iphone 4 (charging fine), plus a heat fan plugged into ONE of my USB ports (with a non powered splitter or whatever they're called). On the other 2, one is charging my MiFi router, one is charging my old iphone 3gs.


    btw, this is a 3 year old Core2Duo PC laptop running Windows 7/64.


    Any you're telling me it can't power the tiny battery on an iPad?


    Only macs can do this?


    Come on. Please. Let's get real here. Someone at Apple was asleep.

  • Allan Sampson Level 10 Level 10 (123,370 points)


    Charging Tips


    The quickest way to charge your iPad is with the included 10W USB Power Adapter. iPad will also charge, although more slowly, when attached to a computer with a high-power USB port (many recent Mac computers) or with an iPhone Power Adapter. When attached to a computer via a standard USB port (most PCs or older Mac computers) iPad will charge, but only when it's in sleep mode. Make sure your computer is on while charging iPad via USB. If iPad is connected to a computer that’s turned off or is in sleep or standby mode, the iPad battery will continue to drain.

  • Philip Eyrich Level 1 Level 1 (0 points)

    I have the same problem on my Intel-based Mac - the iPad 2 says Not Charging when directly connected to the Mac.  I thought it was a cable problem at first, but it's not, and the iPad cannot use other power adapters from Apple either... it's specific to the one that shipped with the iPad.  Grrr!!!  I suppose there's no possible charger for use in a car either...

  • chcn Level 1 Level 1 (45 points)

    It can use the other power adapters from Apple. Our iPad 2 charges just fine with the small square adapters that came with our iPhones. It just charges much more slowly because the massive batteries in the iPad require a lot of juice.


    Believe it or not, it even charges when plugged in to your computer too, just not while it's awake, because there isn't enough power to both charge and run the screen. But plug it in, put it to sleep, and leave it there overnight, and you'll see that it does charge. And, from the point of view of long-term battery life, the slower the charge the better anyway. I nearly always use slow USB charging instead of any of the wall adapters for this reason.