MacBook Air :: Uneven USB Power Output On Ports

Jan 14, 2011

Seems my left USB port outputs more power than my right. Certain devices charge fine on the left but not on the right.


MacBook Pro :: Saying That USB Ports Are Drawing Too Much Power

May 24, 2012

In the last two weeks, every time I plug my Apple 27" display cables into my macbook (power, display and USB connections), I get the following error message on my screen about USB ports are drawing too much power. I don't have anything plugged into the USB ports on the back of my display.

MacBook Pro, IMac, Mac Mini, etc., Mac OS X (10.4.8)

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MacBook Air :: Add More Usb Ports

Feb 15, 2012

I have the microsoft arc mouse and keyboard and each of them have seperate transrecievers. The macbook air only has two ports. If I bought a usb hub would this enable me to plug the transrecievers into the hub so I would have 1 usb port free? Im considering returning them and getting logtech's unifying transreciever, but they have no small keyboards that are compatible with it.

MacBook Air, Mac OS X (10.7.1)

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Mac Pro :: USB Ports Constantly Losing Power?

Mar 22, 2012

Ive got a 2008 Mac Pro and recently Ive been experiencing some issues with its USB ports. The front usb ports have a USB antenna connected and some time later, it just loses power and I have to disconnect it and connect it  in order to make it work again. Besides that, Ive got a  USB hub connected in one of the back ports. In it, is my camera and my keyboard. After some time, it just loses power. Not at the same time than the usb antenna, but in less that an hour I have to repeat the process 2-3 times. Worth to note, that in the two back usb ports left, Ive got an external hard drive in each and I dont have problems, there are always seen in the finder.

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Power Mac G5 :: USB Ports Not Working, IPod, IPhone Not Charging Or Syncing?

Dec 13, 2007

I have had an intermittent problem. Every so often (once a month), my iPhone will not connect to my computer, it does not charge, nor does it show up in iTunes. I checked out 3 different cables, and none work (cable problem eliminated), I tried 3 different iPods, none charged or showed up (iPhone and iPod problem eliminated). I tried both the front and the rear USB ports and nothing ever happens. As far as I recall, this problem just cures itself after a few days. Any idea what I need to have repaired to stop this maddening problem?

Power Mac G5
Mac OS X (10.5)
2.3 GHz, 8GB RAM, 8GB iPhone, Dual Sony SDM-HS95 monitors, PowerBook G4

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MacBook :: Plug USB IPod Into Side USB Ports Keep Getting Message USB Over Current Notice?

Feb 24, 2009

I have a 2.2 ghz Macbook, and whenever I plug in the USB connected to my iPod into the side USB ports, I get this "USB Over Current Notice" and it deactivates the USB Hub. It doesn't do it every time, but it does it more often than not. It will do it on both USB ports.I don't think it's a prob w/ my iPod b/c the connection was fine on my old computer. Any way I can fix this? Should I spend the $ on a Genius appt?

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MacBook Air :: Uneven Backlighting - How To Know About It

Dec 17, 2010

My air has an interesting case of uneven backlighting especially at the edges. This is not bothering to me because I think it's a result of the very thinly made LCD, which helps this computer be so small.

Test your MacBook Air 11.6" by downloading this image and putting it in fullscreen to see if your backlighting is uneven.

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MacBook Air :: USB Port Enough To Power External Drive?

Feb 16, 2009

I was wondering if the since the MBA's USB port has extra power running through it, if it is able to power a USB drive without a AC adapter.

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MacBook Air :: Low Power USB Port - Not Sufficient For LaCie 250GB Drive

Nov 2, 2008

The USB port of the MacBook Air has very low power and it is not being able to power my LaCie 250GB drive without having the hard drive connected to its independent power source. i am having to plug in not only my computer to external power, but i also have to connect the drive to an independet power source. can someone recommend a drive that works on with the MacBook Air that can work without independent power?

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Intel Mac :: USB Ports Don't Recognize USB/ MIDI Keyboard?

Apr 19, 2012

My USB ports don't recognize my USB/ MIDI keyboard.  All drivers updated and updated to the latest Lion. 

iMac (27-inch Mid 2011), Mac OS X (10.7.3)

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MacBook Air :: Uneven Screen Backlight - Screen Darker At The Bottom

Jan 12, 2011

My Air's screen is slightly darker at the bottom (only on a few millimeters, but still). It only happens on a white/light background though (I don't have my dock at the bottom). In comparison, the screen of my MacBook has a very uniform backlight. Does anybody else have this issue?

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MacBook Pro :: USB Ports Not Functioning At All?

Dec 11, 2006

My usb ports in my c2d macbook don' t seem to be working. When I plug in my digital camera (sony) or itunes phone (motorola), nothing happens. I tried both of these devices on my 2 old powerbooks and they sync fine. Anyway I can check whether my macbook usb ports are functioning?

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MacBook :: Not Enough USB Ports For Time Machine?

May 20, 2010

I have a macbook, and it only has 2 USB ports. My SuperDrive broke, so I have to use an external since I'm still a student (so I have an extremely tight budget). I have to use it to boot from the Mac OS X install dvd, so that's both my USB ports gone right there. And my Time Machine backup requires another USB port (since a WiFi drive is too expensive for me). Any way to have both of them running at the same time?

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MacBook :: USB Ports Only Recognize Mouse

Aug 10, 2010

I just bought a MacBook (13.3", 2GHz, 160GB, 2GB Aluminum, Late 2008)on ebay and at first the usb ports seemed temperamental. Now they only recognize my mouse and no other hardware (camera, usb stick etc). (It is running snow leopard.)

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MacBook Pro :: One Of The USB Ports Are Not Working?

Feb 17, 2012

One of the USB ports are not working is there something I can do at home so I can avoid having to go into the Apple Store?

MacBook Pro, Mac OS 9.0.x

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MacBook Pro :: It Cannot Shutdown After Using USB Ports

May 4, 2012

After using time machine or anything plugged into my USB ports my machine will not shutdown normally, i have to hold down the power button and force the shutdown, or just sit and look at a spinning wheel.

Info:MacBookPro, Mac OS X (10.7.3), This also happened whilst operating

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MacBook Pro :: Usb Ports Is Not Working

May 15, 2012

my usb ports on my macbook pro wont pick up anything i plug into them!


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MacBook Pro :: Usb Ports Not Working

Jun 14, 2012

Anything I insert an usb key in one of the usb ports, i can't see it on my desktop nor anywhere else except via Disk Utility, but there is no way I can access it! any ideas what could be happening?

MacBookPro, Mac OS X (10.7.4)

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MacBook Pro :: All USB Ports Are Not Created Equal

Nov 6, 2010

II discovered a very interesting anomaly with my mid-2009 13". I plugged my ipad in to syncs and charge, and the ipad said, "not charging." some research on the net yielded information that the iPad requires a higher powered USB port, which all late model macbooks have... All except mine apparently.....

So, I tried the other USB port, and low and behold, the ipad started charging. So the question is, is this the design of the MBP, or do I perhaps have a sub-optimal USB port?

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MacBook Pro :: USB Ports Hence Need To Connect Via Firewire?

Sep 14, 2009

I have a 15" MBP and am now having trouble discovering my printer on it. I have the printer connected to my iomega powered hard drive which in turn connects to my MBP via firewire 800. Earlier the printer was working fine when the iomega was connected via a USB port. BUt im short on USB ports (one goes to my Companion 5 speakers and the second to a 2nd display besides the mini DVI display) hence need to connect via firewire.

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MacBook Pro :: Usb Ports Turn Off When It Sleeps?

Sep 20, 2009

I have a Mid09 13in MBP.

I noticed that when I put it in sleep, the USB ports still get power. Is there a way to make it so they turn off when it sleeps? I have a cooling plate attached so I have to unplug it every time I sleep it, gets pretty annoying when I forget and I unplug the USB plug and the MBP turns back on. My mouse/keyboard are BT so it wakes it that way, not by USB.

And is it bad for me to have the laptop running with the lid closed? I don't know if the heat would affect the screen or not. I'm currently not doing this because I'm not sure about the effects of the heat on the screen, but I do use a cooling plate, average temps are 120-130*F.

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MacBook Pro :: USB Ports Causing Sparks?

Oct 13, 2009

When I plug an externally powered device (printer, external HD etc.) into my MBP via USB, there are small sparks around the plug and the plugged in speaker makes sounds. I think that this also caused my external HD to die.

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MacBook Pro :: One Of USB Ports Not Working Properly?

Feb 10, 2010

I've got a macbook pro unibody and basically of the two usb ports. The lower one is working fine
but the top one is acting a bit funny. If I put my mouse or graphics tablet in there it doesn't work but if I put my phone or usb drive in there they work perfectly.

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MacBook Pro :: USB Ports Not Working - How To Fix It

May 15, 2010

When I plug a wireless USB receiver for my wireless mouse into my USB drive that mouse will sometimes jump and not work but if i push up on the receiver it starts working perfectly, any ideas on what to do, the receiver is about the size of a thumb drive.

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Add Storage To Macbook Pro Without Having To Use Too Few Usb Ports

Mar 25, 2012

what is the best way to add storage to macbook pro without having to use the too few usb ports.

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MacBook Pro :: USB Ports Not Working Even After Restart

May 9, 2012

This just started about a month ago. When it first occured, I could restart the laptop and the ports would work. Now, no luck. Mac OS X - 10.6.8

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MacBook Pro :: USB Ports Not Lining Up With The Top Case?

Aug 16, 2010

The ports on my MBP 13" don't line up correctly. Comparing it to my om's MBP, it looks like the top case is to blame, and not the logic board. All of the ports that I tested work. (Magsafe, SD card, and USB.) Heres pictures of what I'm talking about. Even though it works fine, what should I do. Should a $1200 computer have this problem? Esp when already paying a premium for dated tech (CPU, Intel Core 2 Duo, small HD) It is hard to show you in the pictres, as the iPhone 3GS took the pictures. Lighting wasn't the best either. The ports were like that when I opened it up in the store. The store was busy, and I asked about it. He said the ports will still work fine, and they do, so even though they are not lined up correctly, they still function. The USB plugs also are fine. they don't run against the aluminum, so its not off lined enough to be an issue... yet.

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MacBook Pro :: One Of The 2 USB Ports Has Suddenly Stopped Working?

Mar 25, 2012

One of the 2 USB ports has suddenly stopped working and will not recognize any device.

MacBook Pro (13-inch Mid 2010), iOS 5.1

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MacBook Pro :: USB Ports Will Only Recognise USB2 Devices?

Apr 26, 2012

This is a weird one.. My USB ports will only recognise USB2 devices now and only if they are powered (my back up drive for instance). I've talked to Apple who believe it's the motherboard but shouldn't the ports have failed completely if that's so? Machine is a Macbook Pro 15" Intel Core i5  2.4 GHz running Snow Leopard (tried Lion but lost too many good apps under that system). Also if I unmount my external back up drive, it's not recognised again unless I restart or interrupt power to the external USB 2 drive. Almost like the old serial devices!

Did a total erase and reinstall of Snow Leopard 10.6.8, tried a powered hub and Apple had me do all the usual key combo resets all to no avail so it looks like I'm going to need a muthaboard. It just nags me that it still sees USB 2 only. How can it fail just a bit and then stay that way??

MacBook Pro (15-inch Mid 2010), Mac OS X (10.6.8)

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MacBook Pro :: USB Ports Aren't Registering

May 10, 2012

My USB ports aren't registering?

MacBook Pro

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MacBook :: Use USB External Hard Drive's Firewire Ports?

May 3, 2009

If I connect my Western Digital 500 GB external hard drive up to a computer using the USB port, then can I daisy chain a firewire camcorder to the hard drive and use it with the computer? Or is that impossible?

I hate the fact that the Macbooks don't have firewire, other then the white one. or the Pros.

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MacBook :: Upgrade From Tiger To Snow Leopard/unable To Use The USB Ports

Apr 19, 2010

TI used an external HD to back up everything first. I upgraded and it went just fine. Now neither USB port will recognize anything plugged in. iphone, ipod, camera, external HD, nothing. Someone suggested zapping the pram, but that didn't work.

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MacBook Pro :: After Reinstalling OSX Lion Neither USB Ports Work

Apr 18, 2012

I have a Macbook Pro 15" Intel Core i7 Mid 2010 model, I had upgraded from the App Store to OS X Lion and was running ok, but at the time had half the disk partitioned into Windows, so got to the stage that I didn't want Windows so wiped it, and backed up the OSX Partition as I figured why not have a nice fresh OSX Lion install. Since I've re-installed OSX Lion I now have no connectivity through the 2 USB Ports, or the SD Card as far as I can tell.

Since I'm a month out of the warranty I don't exist to Apple Support any more, so I've been trying everything I can think of or I can find.I've tried the PRAM and SMC resets which obviously don't work, I've tried the old 3+2 key trick. I have re-installed Lion 3 times, same deal. I've resorted to sticking a small Windows partition on at the moment to make sure it's not hardware issue, not sure what else I've tried? Took it apart, removed the battery for an hour or so, even tried booting with no battery - nothing.

MacBook Pro (15-inch Mid 2010), Mac OS X (10.7.3)

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MacBook Air :: Ethernet To Usb Adaptor - USB 2 Vs USB 1 While Surfing The Internet

Dec 17, 2010

tried using an ethernet to USB adaptor. I saw one at Fry's for $20. I normally do not have need for ethernet but one hotel I have stayed at seems to only have an in room ethernet connection to get on line.Would I notice any difference between an adaptor that supports USB 2 vs USB 1 while surfing the internet?

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MacBook Pro :: Way To Output Audio To A USB Cable From 2008

May 14, 2012

Is there a way to output Audio to a USB cable from a 2008 MacBook pro? I have a stero that has an input for USB sound and Am wondering if it is possible to send sound via my MacBook to it.

Info:MacBookPro, Mac OS X (10.5.8)

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