Features: Can expand your system and storage capacity with an additional hard driveModular construction， you can just remove the CD driver and put this in the slotSupport installation of 2nd operating system on the 2nd HDD and boot selectionPlug and play， easy to useInterface: SATA to IDEThis device accept 2.5" SATA HDD or SSDDimension: 129 x 128 x 13 mm4 mounting screws are includedPackage Includes:1 x HDD Caddy4 x ScrewNote: Please check the size of your laptop CD driver and the size of our item before you place the order.Keywords: HDD caddy， HDD caddies， 2.5 inch