ESATA 2-Ports Express Card(SIL) â¢Compliant with Serial ATA II specification â¢Backward compatible to Serial ATA 1.0 specification â¢Data transfer up to 3.0Gbps â¢Support Native Command Queue (NCQ),FIS Based Switching with Port Multiplier â¢Support 2-independent SATA ports â¢All external ports are compatible to eSATA Specification â¢Compliant with ExpressCard/34 standard â¢Compatible to 1-Lane (x1) PCI-Express throughput â¢Fully Plug & Play and Hot Play compatible â¢Driver supported MS Windows 2000/XP/XP 64-bit/Vista, Linux, Mac OS