Supports any computer cases with an available 3.5" drive bay (both screw-on type or tool-less type) Converts an available 3.5" HDD bay drive to accommodate 2.5" HDD or SSD (Solid State Drive) Constructed from Solid aluminum to ensure maximum structural integrity. Transforms Any 3.5" Bay Drive To Accommodate 2.5" HDDs or SSDs. These are easier to use for the most part. Also, these put the connectors in about the same location as a regular hard drive, so it fits more brackets.