Solve IDE Hard Disk Disk Production Discontinuation Problem: This is a disk case type adapter that reproduces a 3.5-inch IDE hard disk using a SATA hard disk. 3.5 inch IDE hard disk compatible with size, screw hole and connector location. The shape of this product is the 3.5" hard disk itself, so it can be firmly mounted in cases where traditional conversion adapters didn't have. It can also be switched between master slaves, and is completely interchangeable with your existing IDE hard drive. The Savior of IDE System Products!