Another option you might want to consider is to simply use a disk-cloning program to clone the contents of the USBEHD to your PC. Obviously this would be viable depending upon the amount of data contents to be cloned and the available disk-space on your internally-connected HDD.
Assuming a disk-cloning operation is practicable you would create a partition on the recipient HDD to contain the cloned data contents. I recognize that this might not be a practical solution for you because of the size and data configuration of the involved drives. Of course you could also purchase another HDD for this purpose and even use that HDD as a USB device by purchasing a USB external enclosure, something which you might want to consider in view of the failure of your present USB external HDD and in the event should you receive a refund rather than a replacement for your defective commercial USB external device.
As a general proposition we strongly recommend PC users opting for a USB external enclosure of their choice together with a HDD (or SSD) of their choice, rather than purchasing these "one-piece" commercial units. The advantages of doing so are considerable. Think about it.