【3.5 Inch Hard Drive Enclosure】- The 3.5 hard drive enclosure is also available for 2.5 SATA SSD HDD enclosure. This versatility allows you to use a wide range of hard disks with the same ...

The ORICO 9728C3 features USB 3.0 Type-C connectivity, dual bay design, and comprehensive storage capabilities. This enclosure delivers reliable performance with modern features. The 9728C3 combines ...

Suitable for 2.5” SATA/SSD;Supports Standard Notebook 2.5″ SATA and SATA II Hard drives Optimized for SSD, Supports UASP SATA III,Backwards-Compatible with USB 2.0 or 1.1 Hot-swappable ...

The enclosure that he’s using is meant for a 5.25″ optical drive. It comes with a USB to SATA converter which is how he connects the hard drive to the Raspberry Pi serving the files.