The HD-250T-eSATA 2.5” external enclosure supports all 2.5” SATA I/II hard drives with both USB 2.0 and eSATA interfaces for transferring your digital data at the quick rate of 480 MB per second, 1.5 GB per second for SATA I HD, and 3.0 GB per second when using SATA II HDDs. Its gray aluminum alloy case delivers the fastest heat dissipation rate, allowing your hard drive to run coolly and smoothly while still giving your enclosure a more contemporary and sophisticated appeal. It is plug and play, so just connect your enclosure to your computer, and begin your easy data storage process. It is convenient and easy. Install with ease, and use with ease. Great for all your storage needs!