This Laptop 2.5 inch to Desktop 3.5 inch IDE Hard Drive adapter allows you to convert your Laptop Hard Drive into a 3.5 inch IDE hard drive for use on your desktop. 1. allows you to convert a notebook hard drive for use into a desktop system. 2. you can easily connect your 2.5in notebook IDE hard drive to a 40-pin IDE cable for installation in a desktop or tower PC. 3. Cable Adapter - IDE / EIDE adapter Type IDE / EIDE adapter Connector(s) 1 x 44 PIN IDC - female Connector(s) (Other Side) 1 x 40 PIN IDC - male 1 x power 4-pole - male4. Works with all laptop hard drives, including Dell, Sony, IBM, Toshiba, HP, Compaq, and Fujitsu