Diff between usb002 and usb003 compatibility??

aabryon

Honorable
Feb 19, 2013
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10,510
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

 
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.
 
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.