Chipset:JMB362 2x External SATA II Port Best compatibility - based on Silicon Image chipset Compliant with Serial ATA II Specification Backward compatible to Serial ATA 1.0 specification Data transfer up to 3.0Gbps Support Native Command Queue (NCQ),FIS Based Switching with Port Multiplier Support 2-independent SATA ports All external ports are compatible to eSATA Specification Compliant with ExpressCard/34 standard Compatible to 1-Lane (x1) PCI-Express throughput Fully Plug & Play and Hot Play compatible Supported Windows 2000/XP/XP 64-bit/Vista, Linux, Mac OS