The new Dynamode HDDR-3.5I is a feature rich, low cost removable 3.5" IDE interface Caddie that comes in two parts. The Caddie cradle simply fits into any existing 5.25" drive bay & is connected to the Hard Disk interface & power supply the normal way. Insert your existing 3.5" IDE Hard Disk into the removable drawer & this simply slides into the 5.25" bay.