Manufacturer Part #: SBT-ES2P
Don't sacrifice the speed of your external hard drive by bottlenecking it through a USB-based enclosure. Go directly from the SATA on your motherboard to eSATA (external SATA) for 3 Gbps transfer speeds (compared to 480 Mbps on USB 2.0).
Take a true SATA connection outside the box and stop limiting your external devices' transfer speeds to your machine.