When the internal memory of your PC exceeds its capacity and needs replacement, this Technotech External Hard Drive Enclosure will be a handy addition to your device. You can turn your 2.5 inches IDE laptop Hard Drive into an external hard drive in moments with this easy to use case. This specialized IDE hard disk case, designed to hold and power disk, operates on the power supply from the connected computer and hence, no external power is needed. Compatible with Windows and Mac operating systems, this device supports a hard drive up to 1TB 9.5MM in size.