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USB Low Power Notice? Help...
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Senior User
Join Date: Dec 2002
Location: Canada.
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So I just got an Apple Pro wired keyboard for my MacBook. I have the keyboard plugged into one of the USB ports (no hub or anything). When I connect my SanDisk Cruzer flash drive to the USB port on the keyboard it gives me a 'USB Low Power' error, and it will not mount on my desktop. The reason this seems odd to me is because I connected the same flash drive to the same keyboard to my iMac, and it mounted fine... Why would this not work on the MacBook? It's plugged in too...
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..13" MacBook Pro | 2.53gHz | 4gb RAM | 320gb Seagate Momentus XT | OSX.6.6.. // iPhone 4 32gb
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Moderator 
Join Date: Oct 2001
Location: San Jose, CA
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Portables can't provide as much power to USB ports as desktops. Use a powered hub or connect directly to the MacBook.
Steve
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Celebrating 10 years and 4000 posts on MacNN!
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Senior User
Join Date: Dec 2002
Location: Canada.
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Bummer... Thanks for the quick reply.
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..13" MacBook Pro | 2.53gHz | 4gb RAM | 320gb Seagate Momentus XT | OSX.6.6.. // iPhone 4 32gb
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Posting Junkie
Join Date: Feb 2005
Location: 888500128
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Also note that ANY keyboard prior to the new aluminium keyboards only offer USB 1.1 speeds through the built-in hub.
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Administrator 
Join Date: Apr 2001
Location: San Antonio TX USA
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It's definitely about the computer the keyboard is plugged into. My keyboard (the same one you have) works fine with my USB flash drive.
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Glenn -----
OTR/L, MOT, Tx
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Senior User
Join Date: Dec 2002
Location: Canada.
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Yeah I have the new Aluminum keyboard.
Could you guys suggest a good powered USB hub?
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..13" MacBook Pro | 2.53gHz | 4gb RAM | 320gb Seagate Momentus XT | OSX.6.6.. // iPhone 4 32gb
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Addicted to MacNN
Join Date: Mar 2006
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Any of them are fine. Apple tends to make the USB ports on its laptops underpowered. I hate that.
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Senior User
Join Date: Dec 2002
Location: Canada.
Status:
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Yeah I also slightly hate that too...
I was just asking for suggestions on some cool Mac-esque powere hubs. If anyone has some let me know.
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..13" MacBook Pro | 2.53gHz | 4gb RAM | 320gb Seagate Momentus XT | OSX.6.6.. // iPhone 4 32gb
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Fresh-Faced Recruit
Join Date: Dec 2006
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I don't get how an aluminum keyboard can't get enough power but the previous version can just fine. Yes I just tried it to make sure I didn't fry the port or anything.
This is stupid I can't believe the new version is touting USB2.0 ports but can't supply enough power from a MacPro via the aluminum keyboard. I was hoping to be able to plug in my USB2 controller as well but again low power warning. In the end the ONLY thin that can be plugged into this piece of crap is a wired mouse.
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Posting Junkie
Join Date: Feb 2005
Location: 888500128
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Originally Posted by ZakAdelman
I don't get how an aluminum keyboard can't get enough power but the previous version can just fine.
The previous version never could.
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Fresh-Faced Recruit
Join Date: Dec 2006
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It is just a Cruzer thumb drive, and yes it can I just tested it again (as in 5 minutes ago) and the old keyboard pulled up the thumb drive just fine.
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Posting Junkie
Join Date: Feb 2005
Location: 888500128
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That's odd.
I've had no problems whatsoever with my USB stick in the new alu keyboards.
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Fresh-Faced Recruit
Join Date: Dec 2006
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I have an old crappy 1GB stick that does not work either.
And what mac do you have, If it is an iMac then you have more power to your usb, if not then I am on my 2nd defective keyboard. Either way there is no way the old keyboard should be able to supply power to a USB1.1 and not enough to power anything but a mouse on a USB 2.
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Dedicated MacNNer
Join Date: Nov 2007
Location: Kathmandu Nepal
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I think the macbook pro just has a problem with usb ports period. for example, plug a wacom tablet into one side and an external drive into the other, and watch the cursor jump and jiggle. that rots.
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Dead MBP 2.2 4gig / New Aluminum iMacs / "Old" iPhones / 1st Gen Ipod Shuffle
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Administrator 
Join Date: Apr 2001
Location: San Antonio TX USA
Status:
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The most I've ever plugged into my MBP has been a mouse on one port and a flash stick on the other. Never had a problem (generic "pocket" mouse and PNY "Attaché" flash stick). I don't think I'd ever consider using a bus-powered external drive along with anything else on any laptop; I just don't think of laptops as having tons of spare power...
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Glenn -----
OTR/L, MOT, Tx
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Addicted to MacNN
Join Date: Jan 2003
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Apple tends to stick to the USB power specs very stringently. This is why some flash drives will work hanging off the keyboard and others wont.
Dr. Bott sells a 3-port hub that reports itself to the computer as a powered hub, so you wont get low power warnings - good for USB flash drives which should otherwise work fine most of the time, though if the device doesn't work because it can't pull enough power the computer wont warn you, either.
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