My Wd Passport Ultra Usb 3 Was Very Fast But Now It Is Slow Wd My Passport Ultra

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my WD passport ultra usb 3 is very fast since last year but now it start at fast speed then after several second it going very slow like 50kbs what happen with it can you help me please!!!

You may want to check the cable as a worn cable can be the issue. Over time a hard drIve does get fragmented, so that would be a strong possiblity. Also a drive that is starting to fail will struggle. Try to first run drive diagnostics and then get a good defragmantion app to defrag the drive. That should do it. As you didn’t tell us the OS you are using I can’t guide you on the details.