My Passport Ultra for Mac not recognizable

My six month old “My Passport Ultra for Mac” stopped working a couple of days ago. Though I did lose some work most was backed up on another identical drive (My Passport Ultra for Mac) I have tried everything, cables changed computer, disk utility; it is not recognizable and does not even appear in the disk utility.
I file a request for a replacement as it seems pretty dead but if anyone has a miracle work around would love to hear it. Thanks.

Whenever you connect an external drive to your mac, the storage drive may not show up on Desktop, Finder or even on Disk Utility due to various reasons:

  1. USB connectivity problem
  2. MacOS preference settings
  3. Partition map damage
  4. Device incompatibility
  5. Physical damage on a drive

However, to fix the issue, you can try the below methods:

  1. Check the USB connectivity
  2. Enable visibility of external hard drive
  3. Update macOS
  4. Repair external hard drive by using Disk Utility
  5. Repair external hard drive by using Terminal
  6. Erase the external hard drive
  7. If none of the above works, then the drive needs replacement

Further, you can also check the below link for steps to be followed in each method mentioned above:

Hope it helps!