Why does the USB port on a MacAir not register a card reader?

Hi, I am unable to get my Macair (2011) to pick up a card reader (with CF card) inserted in a USB slot. Have tried all the Systems Preferences adjustments mentioned in previous posts. Does anyone have any advice, please? Thanks!

I bought a brand new MacBook Air to transfer my CF Cards via USB 3.0 but my Lexar reader does not mount! It looks like a lot of people are having this problem. My old MacBook Pro from 2008 mounts the reader and card fine. And the new MBA mounts other USB 1.0 and 2.0 devices properly. What's the point of USB 3.0 if it doesn't work with anything?
I visited the Apple Store and they told me to complain here in a forum, so here I am complaining. No one knows of a card reader that's USB 3.0 that works with the new MacBook Air and Retina MacBook Pro.

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My Apple desktop computer, 2.4 GHz Intel duo core, OS 10.6.8, stopped recognizing the WD My Book connected via firewire. It works fine with the USB port so it's not the drive. Help please.

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It can be the bridge. It could need firmware update. or the FW ports may be an issue. LaCie seemed to invent the phrase/tip 'resetting firewire ports' due to the issues with their drive cases.
You can try an SMC Reset.
So far I have avoided name-brand and tend to see them mentioned. Often with a new OS (though you are on 10.6.8, but when 10.6 came out there was a common complaint and thread of users: FW or USB worked but not the other interface).

On my MacBook Pro with Retina Display, Why does the "USB Devices Disabled Unplug the device using too much power to re-enable USB devices" keep coming up after I unplugged the usb device?

On my MacBook Pro with Retina Display 15", that I purchased a few weeks ago, started coming up with the following message on my desktop:
"USB Devices Disabled Unplug the device using too much power to re-enable USB devices".
I unplugged the device and the message still keeps coming up.
This is what I have done so far to troubleshoot:
I shut down the laptop. When booting up I pressed the command+option+p+r at the same time. It comes up with a menu to reinstall OSX, Get help online, Run Disk Utility, etc. I choose the disk utility and repair the disk and then restarted.
The message keeps popping up and I can't seem to get rid of it. Why does the message keep popping up even though I don't have any devices hooked up to the laptop at all? Any help to reenable my usb ports and get rid of the messaage would be helpful.

I talked to Apple Support and we at least stopped the bleeding, a little bit. These are the troubleshooting steps I did before I contacted Apple Support:
1. Reinstalled OSX
2. Restore the last known good Time Machine Backup.
This did not fix my issue, so I called Apple Support and they told me this:
1. Turn Power off.
2. Wait 15 seconds.
3. Plug in Magsafe adapter.
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5. Hold down the Shift+Option+Power Button for 20-30 seconds.
6. Turn Power back on.
Ok, this stopped the bleeding a little, but as soon as I plugged in a Apple USB Superdrive
and a Apple Mini Displayport to VGA Adapter. This "USB Devices Disabled" pop-up pops up like every 30 minutes now. At least, it is not constantly popping up after I close it, so I guess it will do for the temporary. Going to contact Apple support, later, though to see what else can be done.

Does the USB port provide power in sleep mode?

Subject pretty much says it all... curious as to if the USB port will continue to provide power to a connected device even in sleep mode?
I can find some info on the G5 iMacs that say they did not, but can't find anything on the Intel iMacs.
Specifically, thinking of buying an iPod Nano and wondering if it will charge it while sleeping.

Regarding Apple's document, it is interesting to note:
Your computer goes to sleep
Your computer can only charge iPod when it's turned on and not asleep. Make sure your computer on and is not set to go to sleep when you want to charge iPod.
Tip: Some Macintosh computers can charge iPod even though they're asleep. If your sleeping computer doesn't charge iPod, don't worry, just wake it and let iPod charge.
Apple doesn't specifiy which computers are capable of this however so I wouldn't bet on it.
Of note, the USB port must provide a very small amount of power not only, I would think, to allow the keyboard/mouse to wake the Mac but also to light the LEDs of my bus powered (not AC powered) Macally hub which remain constant as long the Mac is on (sleeping or not). That also applies to the USB charger that came with my Kensington Wireless keyboard (although I have not tried charging while in sleep mode). That being said, the power - no doubt - is minimal.

Why are my USB ports are working, but not providing power?

I just got a brand new 15" Macbook Pro and the USB ports appear to be working fine for items that don't require power, but I plugged my Avid Mbox into it and the power light on the Mbox flashes, indicating it is not getting enough power. The Mbox works fine on my other Macbook Pro (2010 model) and it works on my Imac, but not the new Macbook. I have a powered hard drive that works fine on the new Macbook, so the USB port is not dead, but just seems to not be supplying power properly for this device that needs it. I don't have another item which uses the power like this to test, but I wonder if anyone has any idea if this is simply faulty hardware and if there is a conclusive way to test. As it's literally two days old, I would exchange it if it really isn't working properly. Only difference between this new Mac and the others is that it's running Lion and the others are running Snow Leopard.

If you have an iPhone or iPod that can be charged by the USB port, then the problem lies with the Mbox and/or the cable attaching it. If you google the problem (and I hope you did, because there are tons of posts at the various Mac websites about troubles with the Mbox and the MacBook Pro), you'll see people either plug and play with no issues, or they spend a lot of time doing so. It sounds like you're the latter.
Anyways, if an iPhone or iPod (or anything else that requires USB power to run) doesn't work, then the issue is your MBP.

HT1212 I am connecting the locked Iphodne as the direcctions say and turning it off then plugging it back to the usb port, but it is not "detecting a device to restore" what do I do now?

I need help. My daughtér's friend got on her iphone4s and plugged in the wrong passcode so now it's disabled. I did as the directions say and turned the phone off while it is plugged into the usb port while turning it back on, but it doesn't say "detecting a disabled device reset"asit should. What should I do?

how long have you had your ipod? mine did the same but after a while you need to get a new one because of the battery...

Why does the RMI port keep changing?

I have set up an RMI server process on a Sun server (SunOS 5.8) and I am running the client process from another Sun server (SunOS 5.9). I created a policy file on the client machine providing access to port 1099 on the server machine.
I kept getting connection refusals, and every time I did, it was on a different port. I changed the policy file to allow any port from 1099 on up in order to get around the problem. I tried to start up the rmiregistry with 1099 as an argument, and that did not help. What's going on?
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(b) the Registry port is 1099 but RMI servers are exported on a system-selected port unless you specify one. If your Registry and RMI servers are in the same JVM they can share ports

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I had the exact same problem
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Why does the frame of my rotated video not rotate also?

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TIA, Ken

It never ceases to amaze me the odd hours that the loyal Adobe staff puts in. Look at the time stamp on Mark's post.
To be more specific, just in case other people come along with the same question, create the sequence from your clip first. That will make it the right size and shape and frames per second to match up with your video.
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Some of my friends here on the forum seem to hate the concept of video shot in portrait mode on a phone or a video camera. However, there are times when it makes perfect sense to me. Especially when it is going to be displayed on a monitor that is oriented in portrait mode. Lots of advertising done that way. And who says that video on a web site has to be landscape? Why would you shoot the Eiffel Tower of the new Freedom Tower in landscape mode?
If you are shooting video of a person standing and talking to put on the side of a web page, portrait makes more sense.
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I'm having the same problem lately. I have a mid 2010 21.5" iMac with an internal SuperDrive running Yosemite. I tried putting in "Dawn of the Planet of the Apes" and "The Giver" rented from RedBox. Both spin sputter for a bit and then eject the disk back out. So, it never mounts and no software (Finder, Disk Utility, DVD Player) ever gets a chance to see it. Both play fine in a 15 year old DVD player, and my purchased copy of "The Dark Knight" mounts just fine in the iMac. So, I have to assume that something is being done to the DVD's that rental companies are given to prevent them from mounting or something.
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I discovered that when sending a link to the "I'm a nerd..." thread to co-workers, and they couldn't see it.

off-topic is Arch specific and solely to the community only.iirc this had been said earlier too.

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Jamie,
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Why does the USB port on a MacAir not register a card reader?

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