Dual-USB External DVD/CD RW 'drawing too much power'

Hello,
I had to make an emergency purchase down my local electrical store because my internal drive has stopped working properly. So, bought one of these: (http://cnmlifestyle.com/) DVD/RW that is supposed to be mac compatible. It has two USB connections - one for power & another for data I presume.
When I plug it into a USB port, a dialogue box appears saying 'Because a USB device was drawing too much power from your computer, one or more of your USB devices have been disabled.' And so therefore there isn't any power to the unit... and it won't work.
This appears immediately after plugging one of the two in. When I plug in the second USB connection a second, identical dialogue box appears. If I connect then re-start, two of the dialogue boxes appear...
Might it be that this unit is not compatible with laptops? (there is no information about voltage on the unit).
Many thanks,
Jay

Optical drives have motors and that makes them power hogs. If it does not get power from its own power brick, it could be overpowering your USB bus, especially if you have other USB devices connected.
Have you tried swapping the cables on the Mac's ports? Some people report that the left- and right-hand ports produce difference power levels.
If the drive does not have a separate power source, it was designed for mobile use on a notebook computer but someone in Marketing was not thinking about power issues when trying to jump on the mobile bandwagon.
I see two solutions, the best listed first:
1) return the drive for one that has a power brick self-powered)
2) Purchase a powered USB hub (has a separate power brick). That way, the drive gets a lot of power from the hub. This one:
http://eshop.macsales.com/item/Macally/TRIHUB4/
shows an ac adaptor is included

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"Because a USB device was drawing too much power from your computer, one or more of your USB devices have been disabled.

Here is the total error message:
"Because a USB devce was drawing too much power from your computer, one
or more of your USB devices have been disabled.
To prevent damaging your computer, the USB device drawing too much
power has been disabled. Other devices may have also been disabled.
When you disconnect the device drawing too much power, your other USB
devices will be enabled again."
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It deactivates so i cannot use it.
I have tried:
Connecting the soundcard to my mothers mac -> it worked!
Connecting an external harddrive to my mac -> it worked!
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Hi, ryankeenanrk.
Thank you for visiting Apple Support Communities.
I would recommend trying the steps in both articles below and test the results.
OS X Mountain Lion: Reset your computer’s PRAM
http://support.apple.com/kb/ph11243
Intel-based Macs: Resetting the System Management Controller (SMC)
http://support.apple.com/kb/HT3964
Cheers,
Jason H.

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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:
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Changing the USB port used to solve the problem. Since this Sunday I can't get the keyboard to work on any USB port.
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I tried on a Macbook and got the same result, while if connected to an HP laptop it works.
I already tried:
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thanks

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I know it's a long post, but I just want to describe everything I've tried to do to solve the problem, so we can cut right to the chase
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MIght be something to help you here > USB Device Drawing Too Much Power

External HD claims to be drawing too much power, after 2 months of working

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Repairing the Hard Drive and Permissions
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Hi Guys,
Today I went and bought myself a new Mac Book Pro 13".
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Use a self powered USB hub.
https://discussions.apple.com/community/notebooks/macbook_pro?view=documents

I've been getting "one of your USB devices is drawing too much power" and my keyboard is disabled

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See "About This Mac" from the Apple menu in the menu bar, and there than under USB, for what's all connected to the USB controllers in your Mac. You'll be surprised, it's not only keyboard, mouse, or what else you use externally.
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I was wondering if anyone had any solutions to a rather strange problem.
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The USB SD card fails to mount (no power light), my Lacie USB drive brings up a warning that it is "Drawing too much power and will be disconnected".
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Thanks in advance
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Hi Everyone,
Bought recently a new macbook pro 13 inch with Retina display with 120 GB flash drive.
Connected a non-apple CD drive to my macbook and after that started receiving this message: "Because a USB device was drawing too much power from your computer, one or more of your USB devices have been disabled."
initially I was receiving this message after I switch on my macbook but now after every 30 seconds this message pops up although I never connected anything to my macbook through its USB ports.
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Regards
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Press the power button to turn on the computer.
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I am trying to upload photos from my digital camera. Every time I try to plug it into my USB, the following error message comes up: "Because a usb device was drawing too much power from your computer, one or more of your USB devices have been disabled."

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Get a powered USB hub.
https://discussions.apple.com/community/notebooks/macbook_pro?view=documents

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I hope it works for you ...

Dual-USB External DVD/CD RW 'drawing too much power'

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