usb device not recognized

April 26, 2011 at 12:38:45
Specs: Windows 7
My usb will not recognize my external DVD drive when I plug it in. How can I get my computer to recognize it?

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April 26, 2011 at 13:52:45
Did you plug it in and turn it on before you boot up? If not, try that.

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April 26, 2011 at 20:11:34
The external optical drive requires that the USB port you plug it into can supply 500ma, and even if it can it may not work properly in all USB ports - e.g. a port in an external hub.

There are lots of laptops that can't supply 500ma per port when more than one USB device is plugged into the ports built into it - it can only supply 500ma total for all the ports, or for a pair of ports - if you plug in only the external optical drive it may work fine, or you may need to plug it into two USB ports via a USB Y cord.

External hard drives also require 500ma.

Troubleshooting USB device problems including for flash drives, external drives, memory cards.
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