Support 1-lane (x1) PCI-Express Bus with transfer rate 2.5GB/s Compliant with PCI-express 1.0a specification. Supports SATA II specification with transfer rate 3.0GB/s. Backward compatible to SATA 1.0a specification. Support hard disk with Native Command Queue (NCQ) feature. Capability to connect to a Port Multiplier with FIS based switching. Hot plugging and Plug & Play supported. Supported Raid 0, 1 (optional). Raid 10, 5 are supported, if drives are connected to Port Multiplier. Optional External SATA (eSATA) interfacing. Support Window 2000, XP, 2003 sever, Vista and other popular OS.