This NexStar 6Gbps 3.5 inch SATA III USB 3.0 enclosure contains a Macintosh external 250GB hard drive. The drive was installed by an Apple repair shop to transfer data from a defunct Mac. It was used once, securely erased, and is formatted as Mac OS Ext (Journaled).

I do not know any more about this item, other than what’s written on the NexStar box (please see photos) and what appears on the Mac under System Information > Storage:

Macintosh External HD:
  Available:    249.61 GB (249,612,312,576 bytes)
  Capacity:    249.93 GB (249,925,091,328 bytes)
  Mount Point:    /Volumes/Macintosh External HD
  File System:    Journaled HFS+
  Writable:    Yes
  Ignore Ownership:    Yes
  BSD Name:    disk2s3
  Volume UUID:    9C62F31C-9CE7-3A50-8937-011C801E2704
  Physical Drive:
  Device Name:    00JS-41MVB1
  Media Name:    WDC WD25 00JS-41MVB1 Media
  Protocol:    USB
  Internal:    No
  Partition Map Type:    APM (Apple Partition Map)