IDE 2.5 to 3.5 Hard Disk HDD Converter Adapter Power Cable Easy to connect the 2.5 inch hard disk (notebook hard disk) to your desktop computer. Easy to transfer the data to the 2.5 inch hard disk also. It convert the 44 pin (notebook HDD IDE) to IDE 40 pin (3.5 inch IDE HDD). Using hard disk type 4 pin power plug. Hard disk NOT include.