Unable to access Seagate external hard drive files after swapping sata bridge card for a usb sata

Hi, recently my computer has been unable to detect my seagate 3tb external hardrive so I removed the sata bridge card and used a usb card reader to access the external hardrive. However, now that my computer can detect the hardrive, I am unable to access the files due to an I/O device error. Please advice, thanks.
 
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