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Diff between usb002 and usb003 compatibility??

Tags:
  • Hard Drives
  • Computers
  • Storage
  • Compatibility
Last response: in Storage
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February 19, 2013 5:45:42 AM

Hello,have older computer for photos and slides want to add to storage with external hd..all the ones i like say they are usb003..all my ports art usb002 on my windows xp pro computer.any info on usb003 wud be fine everyday computer is wondows 7 prefer the old one

More about : diff usb002 usb003 compatibility

a c 79 G Storage
February 19, 2013 5:54:20 AM

Most USB 3.0 external hard drives will work on USB 2.0 ports, but check the details on the packaging to be sure. Do remember however, that you won't get USB 3.0 transfer speeds from a USB 3.0 drive that's plugged in to a USB 2.0 port, as it's the specification of the USB host device which determines the maximum transfer speed that's possible.
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February 19, 2013 6:19:21 AM

thanks.so if i purchase a usb003 external hardrive it will accept and transfer from older computer with the usb002 at the 002s normal speed.
But if i ever move the external hardrive over to my other computer which has a usb003 port ill also be okay but just faster.at 79 i guess im too cautious.
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Best solution

February 19, 2013 6:44:25 AM

aabryon said:
thanks.so if i purchase a usb003 external hardrive it will accept and transfer from older computer with the usb002 at the 002s normal speed.
But if i ever move the external hardrive over to my other computer which has a usb003 port ill also be okay but just faster...


Yes, that is the case. An USB 3.0 external HDD will work just fine on both USB 2.0 and USB 3.0 ports. The only difference will be the speed. On an USB 2.0 port you may expect write speeds in the range of 20 - 30 MB/s and on an USB 3.0 port the write speeds may go up to 90 - 100 MB/s and even more. At least these are the speeds I observe with my Western Digital MyPassport 1 TB USB 3.0 external HDD.
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February 26, 2013 5:11:44 AM

Best answer selected by aabryon.
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