Using Apple USB Keyboard Extension Cable for Power

I have a USB keyboard extension cable. Part number is 591-0079. Can I use that to extend the power cable for my iPad when it is plugged in? Can I also use it for my iPhone?
I wanted to check first to make sure because it predates the iPad and the iPhone.
Thanks any advance.

So there won't be any problems transferring power through it? It will charge iPad and iPhone without any trouble?

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Apple USB keyboard drawing too much power

I had my apple slim keyboard for more than a year and it always worked perfectly.
Last week I started receiving this error message at the login screen:
"Because a USB device was drawing too much power from your computer, one or more of your USB devices have been disabled."
Changing the USB port used to solve the problem. Since this Sunday I can't get the keyboard to work on any USB port.
No other devices are using the keyboard as an HUB and the iMac has all the latest updates installed.
I tried on a Macbook and got the same result, while if connected to an HP laptop it works.
I already tried:
- changing USB ports on the rear of the iMac
- attaching it on an externally powered USB HUB
- resetting PRAM
- resetting SMC
- cleaning the contacts of the USB cable and the ports on the keyboardù
- attaching usb devices to the ports on the keyboard will give them power, but those are not recognized by the system
Any clues? I ran out of ideas...
thanks

It's related to the current drawn through the USB port itself which us monitored by the SMC and interpreted by the OS. Without getting too technical, Macs are better "tuned" to detect these issues. It sounds like your keyboard is dead or dying as it is drawing more than it's allocated current threshold. Solution, replace the keyboard. Some possible causes over time include, sweaty hands, humidity, coffee - it's the sugar over time that does the damage.

MAC PRO USB Problem - Traced to bad Apple Keyboard Extension Cable

I found a fix to a problem synching to my itunes Library on my early 2008 MAC PRO. The Apple supplied USB extension cable for the keyboard was defective.
The symptoms were hangs in itunes and finder synching to iPods and transferring data to USB hard drives. The iPods and hard drives never lost power and no errors/log entries were made. The transfers simply stalled and would not continue. itunes and finder would hang until the drive or ipod was removed. These devices were installed directly to USB ports on the MAC PRO. No other USB devices were connected except for the aluminum keyboard and mighty mouse; the mouse was connected to the keyboard. The keyboard was connected using the USB extension cable that shipped with the MAC PRO.
Hardware diagnostics were all clear. The keyboard and mouse never had any connection problems. Only itunes syncs and hard drive copies would fail; these would occur at random times. I had an open ticket with Apple to have the logic board replaced as it was diagnosed to be a hardware/USB problem.
Removal or replacement of the extension cable on the keyboard (which was connected to a different USB port and NOT in the USB chain with the ipod and hard drives) permanently fixed the problem. I cancelled the Apple HW replacement.
I have noted several posts with others having problems with USB ports and devices. I wonder if Apple has an unknown problem with bad keyboard extension cables.

I think you may be onto something there. I'm just a few weeks into my second Mac Pro and again it's having the same USB problems which led Apple to give me a replacement machine previously. I went through several weeks of considerable testing with Apple Engineers prior to that - an Apple Care application to collect data from my machine, Apple Developer USB prober and two clean installs. The latest machine initially showed no sign of the problem then it started again - 2 iPods "can not be read or written to" part way through sync, Aperture quitting importing from USB SD card reader, USB drives dismounting etc. So I pulled out the Aluminium keyboard and, lo and behold, the iPods managed to get all the way through synching without errors. I really like the alu keyboard so it's a huge shame that it might be the cause of all my problems so far - and the Mac Pro is otherwise a beautiful computer.
But is this really a hardware problem of the internal USB cards and power management or supply?

I have my Macbook Air hooked up to a Tunderbolt Display, is there any way to either power on or wake from sleep mode using an Apple USB keyboard pluged into the Thunderbolt display?

I have my Macbook Air hooked up to a Thunderbolt Display, is there any way to power on the Macbook Air using an Apple USB keyboard plugged into the Thunderbolt display? I would like to be able to keep the Macbook Air in the Archbook dock and not have to open it to power it on?
Thanks for any advise.

SadisticIron wrote:
i just baught my first iphone and it is a jalbroken
Buzz! Thank you for playing!
Discussing jailbroken devices is forbidden here by the Terms of Service.
You can not get help here.

Apple Keyboard Extension Cable

Does anyone know where I can acquire an extension cable for my USB Apple Keyboard that exceeds 6 feet?
I was told that the cable has connect directly to the rear panel of my Power Mac G4 due to voltage reasons, so most off-the-shelf USB extension cables will not work. Also, you cannot simply connect two Apple 3 foot extension cables back-to-back as this won't work either.
Sure would appreciate solutions...

A normal USB extension cable will work. Look for one with thick wires. Apple was concerned about their keyboard extension cable overheating if used with high power USB devices, so they use a special connector that will only work with Apple keyboards.

I have Mac Pro 2007, which have no bluetooth hardware. What should I do to use Apple wireless keyboard and magic mouse??? Can 'third party's internal bluetooth card' be used for this purpose? Help please...

I have Mac Pro 2007, which have no bluetooth hardware. What should I do to use Apple wireless keyboard and magic mouse??? Can 'third party's internal bluetooth card' be used for this purpose? Help me please...

You can find the Apple Bluetooth card on eBay for as little ten dollars (says its for the 2008 model Mac Pro, not sure about the 2007).
http://www.ebay.com/itm/Bluetooth-Board-iMac-and-Mac-Pro-922-8233-922-8233-/1208 49278570
Here is a link to a full explanation of the card and how to install it. Part numbers may differ a bit as that is an old article and newer models have come out.
http://www.xlr8yourmac.com/systems/Mac_Pro/Bluetooth_MacPro_install/Bluetooth_Ma cPro_install.html
Just make sure that the part will work in your model Mac Pro. To that end, you may be better off avoiding eBay and going to a parts reseller. There are even third party cards that use the internal Apple bluetooth slot.
http://fastmac.com/bluetooth.php
In theory, using a USB or PCI card will work at login so long as it is recognized by Apples drivers. You say you need to launch an application to use your current USB Bluetooth dongle? If it is not controlled by the Bluetooth icon in the menu bar then it must be using a third party driver of some sort. Unfortunately, I don't know off hand which USB and PCI cards are supported.

I'm using a Rocketfish USB to Lightning cable for powering my IPAD2. But when I plug it in the battery icon beeps and comes on then goes off...then goes on...then goes...all beeping every time. Its as if its being unplugged and plugged in over and over.

I'm using a Rocketfish USB to Lightning cable for powering my IPAD2. But when I plug it in the battery icon beeps and comes on then goes off...then goes on...then goes...all beeping every time. Its as if its being unplugged and plugged in over and over. It won't stop...and its not charging....just beeping. I've check connections. Any ideas?

- While charging try resetting the iPod:
Reset iPod touch: Press and hold the On/Off Sleep/Wake button and the Home
button at the same time for at least ten seconds, until the Apple logo appears.
- Next try restoring the iPod via iTunes. First from backup and if still problem restore to factory defaults/new iPod.
- However, I really think that the iPod has a hardware problem and an appointment at the Genius Bar of an Apple store is in order. If defective Apple should give you a refurbished iPod.

Just installed OS X Yosemite Version 10.10.2 - My Apple USB Keyboard now refuses to work. I'm using a iMac Retina5K 27inch Late 2014 - any suggestions?

Hi I've just installed OS X Yosemite Version 10.10.2 - My Apple USB Keyboard will no longer work. Any suggestions? (iMac Retina 5K, 27inch Late 2014) Thanks.

Hi, thanks for the assist. Looks like there is a glitch in the new software, as I did as you suggested, removed other USB devices, powered off. Then plugged in the keyboard - re started and hey presto it worked. Thanks v.m.

After a power outage my usb ports on the back of the tower do not recognise the apple usb keyboard upon start up. How do I fix this issue?

I have a Mac Pro 5.1 and after a power outage my usb ports on the back of the tower do not recognise the apple usb keyboard upon start up. If I leave the plug out and then insert the keyboard after start up it works fine. The same happens with the front usb ports. How do I fix this issue?

System.log says USB related message?
Resetting SMC as well as NVRAM could solve the problem.
Intel-based Macs: Resetting the System Management Controller (SMC)
About NVRAM and PRAM

I have ipad2. i want to use apple bluetooth keyboard for writing.but autocorrection doesn't work! can i solve this with settings?

i have ipad2 i want to use apple bluetooth keyboard on writing but auto correction doesn't work! how can i solve this? thank you

Have a read here How to set up your Apple Wireless Keyboard
Stefan

Keyboard extension cable help

My desk is set up in such a way I have always needed a keyboard ext cable. I had an iMac (2006) with which I used a USB 2.0 ext cable. That same cable will not work with my brand new iMac. I am guessing I need to buy a USB 3.0 ext cable?

Roger, think it through. The connector at the end of the keyboard's cable has a groove, not a tongue. The keyboard's Type A connector will plug into any USB type A receptor. If it had a tongue then that would be a different story, you would only be able to plug a connector with a tongue into a receptor with a matching groove.
Now I just went to find the Apple USB extension cable that came with the aluminum keyboard that I never took out of the box and it has a tongue in the Type A receptor, which limits the use of the cable to a USB Type A connector with a matching groove. So it is the reverse of what you said above. You can use the keyboard with any USB Type A extension cable or port. But Apple seems to be limiting the use of their USB Type A extension cable to their own keyboards and mice that have a matching groove.
From the Wikipedia article about USB - (emphasis mine)
Apple has shipped non-standard USB extension cables with some of their computers, for use with the included Apple USB keyboards. The extension cable's socket is keyed with a small protrusion to prevent the insertion of a standard USB plug, while the Apple USB keyboard's plug has a matching indentation. The indentation on the keyboard's plug does not interfere with insertion into a standard USB socket. Despite the keying, it is still possible to insert standard USB plugs into the extension cord. The protrusion can also be shaved off with an appropriate blade, or crushed with locking pliers.

Apple USB Keyboard Extinction

Ok I bought the new Apple USB keyboard a few months ago. Well it came with a USB extinction cord. The only problem is that the USB in side has that little triangle which keeps people from using it with other devices. Well is there a site or store that sells an adapter that plugs into it and has a regular USB in on the other side.
If people need I can post pictures.
I originally posted this hear:
http://discussions.apple.com/thread.jspa?threadID=1817028&tstart=0

The Apple USB "extension cord" is deliberately keyed (possibly so that you don't try to string seven of them together and exceed the allowed length for USB). It works only with the keyboard and you cannot use it for other USB devices.
If there were an adapter (which there is not) it would be more expensive than a new cable. Just buy another USB cable, A male to A female. They are available from your favorite online vendor.

Apple USB keyboard does not work

I have the same problem as described by Sweboss on November 15th, 2012. The Apple USB keyboard is working perfectly, but if I shut down the computer, when I switch it on again, the USB keyboard does not respond, and the computer is looking for a Bluetooth keyboard (which I had before). I have tried switching off, unplugging all peripherals, then unplugging the computer, waiting 15 seconds, then plug it in, wait 5 seconds (this is a remedy proposed in other mails). Switch on and the USB keyboard does not respond. It is not that particular USB port, as it works perfectly well with other peripherals like my scanner, or printer, and changing ports does not help. And when I tried it last time, I had no other USB peripherals connected. Can anyone help?

That is definitely some strange behavior, good to finally be working, but does not explain exactly what causes the behavior. Could have something to do with the energy saver part of the operating system, or a miscommunication with the USB bus itself. With multiple USB ports it would be good to test on different ports to see if that is an issue. Anyway, it is working now and that is good.
Another I don't know why but it works: a couple months ago a user was having problems with a wireless keyboard. The keyboard-iMac communication resulted in random charaters, time lag, and other bad behavior. The user finally found by accident that turning the keyboard off, removing the batteries, and then spending about five minutes just pressing keys, placing the palm of the hand on the keyboard and pressing, just pressing and pressing, and then replacing the batteries and turning on the keyboard, it worked fine. Seems like it is necessary to just force the keyboard to discharge all of the key switches. Those keyboards use capacitance switches instead of mechanical switches. So they retain a charge.
While that was a wireless keyboard, I wonder if that was what happened in a way with your keyboard...the unplugging and leaving it for a period of time, any charge may have dissipated and it would work again. If this happens again, try the above procedure and see if it helps.

After upgrading to 10.8.3 my Apple USB keyboard stops working after about 3 hours

Mac Pro 3,1
OS X 10.8.3 Server
32GB RAM
Apple USB Keyboard works fine after reboot (typing on it now), stops responding after about 3 hours.
I see nothing in Console that looks like the culprit. Here is everything around the last time it happened - between 11:28 and 11:30 they keyboard just stopped working. Unplugging and re-plugging doesn't bring it back. Changing USB ports doesn't bring it back. Rebooting is the only thing that seems to work. Bluetooth keyboard works before and after.
3/25/13 11:28:08.503 AM mdworker[4631]: Unable to talk to lsboxd
3/25/13 11:30:00.962 AM CalendarAgent[768]: [com.apple.calendar.store.log.caldav.queue] [Account refresh failed with error: Error Domain=NSURLErrorDomain Code=-1003 "A server with the specified hostname could not be found." UserInfo=0x7fb609cb7730 {NSUnderlyingError=0x7fb60f2d0ed0 "A server with the specified hostname could not be found.", NSErrorFailingURLStringKey=https://[email protected]/principals/__uids__/A8612C91-669B-4A4B-88 04-2AA518E4842B/, NSErrorFailingURLKey=https://[email protected]/principals/__uids__/A8612C91-669B-4A4B-88 04-2AA518E4842B/, AccountName=lovemac7.brumstead.private, CalDAVErrFromRefresh=YES, NSLocalizedDescription=A server with the specified hostname could not be found.}]
Anyone else seeing anything like this?
Everything worked fine in 10.8.2.

Hey Doug,
Thanks for your post, and welcome to the Apple Support Communities.
I understand that your keyboard backlight is not working upon startup, the following may resolve your issue:
Intel-based Macs: Resetting the System Management Controller (SMC)
http://support.apple.com/kb/HT3964
After performing normal troubleshooting, these symptoms may indicate that an SMC reset may be necessary:
Lights
The keyboard backlight appears to behave incorrectly (on Mac computers that have this feature).
You may also want to reset your computer's PRAM:
OS X Mountain Lion: Reset your computer’s PRAM
http://support.apple.com/kb/PH11243
Note: Resetting PRAM may change some system settings and preferences. Use System Preferences to restore your settings.
Thanks,
Matt M.

Why don't my Apple USB keyboard and mouse work in Win XP after bootcamp driver installed

Hey there,
I just installed Win XP Pro + SP2 using Bootcamp 3.0 on my Mac Pro 1.1 (2006) which is running Snow Leopard (10.6.8). The Win XP installation went flawlessly and everything seemed to be working OK (mouse & keyboard were fine) until I installed the Bootcamp drivers from my OS X installation DVD. The installation didn't report any problems, but when it was finished, the keyboard (Apple USB keyboard) and mouse (Logitech USB mouse) stopped responding. No power to the mouse at all makes me believe that it is actually the USB drivers themselves that have failed. Rebooting WinXP didn't solve the problem - it boots WinXP just fine (and fast!), shows the Bootcamp Help screen, but no mouse or keyboard, a.k.a., USB, response.
Can I recover from this somehow?
Help please?
Thanks,
Ron

Problem solved.
It seems that the boot camp 3.0 drivers installed from my 10.6.8 DVD weren't sufficient. I repeated the install from scratch, but rather than rebooting as soon as the BC 3.0 drivers were installed, I allowed the Apple Update utility to D/L and install the BC 3.1 and 3.2 updates. Viola! Everything works brilliantly. My Mac Pro is now the best Windows PC I have ever owned

Using Apple USB Keyboard Extension Cable for Power

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