SonnetTwin 10G (Presto) 10GbE(Dual-port, 10GBASE-T 10GbE PCIe Card)
Presto 10GbE 10GBASE-T: Provides 10GbE Connectivity to Mac and PCs

The Presto 10GbE 10GBASE-T card enables you to connect your computer to high-speed infrastructure and storage without stepping down in speed. Setup is simple—after installing the low-profile card into an available x4 or larger PCIe slot in your computer, just download and install a driver, connect to the switch or device’s 10GbE ports via inexpensive CAT-6 or CAT-6A copper cabling at distances up to 55 or 100 meters, respectively, and then configure the card through the OS X® Network control panel or Windows Device Manager. This Sonnet solution is perfect for high-performance computing where low latency, high bandwidth, and low CPU overhead are required.