2.5&ldquo; 3.5&rdquo; HD to 5.25 HDD Drive Bay Computer Case Adapter Mounting Kit Bracket for Desktop PC 2.5 3.5 HD to 5.25 HDD Drive Bay Computer Case Adapter Mounting Kit Bracket for Desktop PC Fit any 2.5"or 3.5" HDD into your existing 5.25'' Drive Bay Maximize the internal space of your computer case for efficient usage Converts 5.25" drive slot to 2.5 3.5" HDD or other device bracket Comes with screws set