LaCie 130804 eSATA PCI Express Card - Windows / Macintosh Hot plug/unplug hardware support Compatible with LaCie Biggest S1S, Biggest S2S, d2 Hard Drive SATA & d2 eSATA II 3Gbits Hard Drive Interface - 2 external eSATA ports Compliance - SATA I & SATA II compliant; PCI Express (x1) compliant interface SATA Support - 2 SATA channels, TCQ, NCQ, port multiplication