My Passport Essential Doesn't run at usb 2.0 speeds anymore

My passport essential external hd used to run at usb 2.0 speeds, but now only runs at 1.1 speeds. I know it isn’t the port or the cable because I have another external hd that runs just fine. Please help…

Since there’s been no replies, maybe you should try contacting WD’s Technical Support about this. You can do so either by phone or email.

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