SSD and 3.5 ich hdd adapter for 5.25 bay

thingiverse

Computer hardware developer creates single bay device that accommodates both a solid state hard drive (SSD) and a traditional 3.5-inch hard disk drive in one space originally intended for a standard optical disc drive, allowing users to store their most frequently accessed files in the faster SSD while also retaining their entire music and video collection on a lower-cost HDD within the same enclosure.