Featuring 2 internal SATA2 ports, the Rosewill RC-211 controller card provides a simple, straightforward way to add more expansion to your system. Using a PCI-Express x1 interface you can now use that tiny slot on your motherboard for something besides gathering dust. Also supported is RAID 0, and RAID 1 to enhance data access and control. Compliant with the Serial ATA 2 specification, the RC-211 will handle most SATA devices -- just make sure the device you are adding is compatible. If the hard drives are SATA2, the RC-211 will deliver high speed transfer rates up to 3.0Gbps. Support for NCQ (Native Command Queue) enhances hard drive performance. Whether you have a tower case or a low profile desktop chassis, the RC-211 can be used by installing the optional low profile bracket. Last but not least, the RC-211 includes drivers for most Windows operating systems including Windows 2000/XP/Vista and Windows Server 2003. Internal Connectors: 2 x SATA II Transfer Rate: 3.0Gbps RAID: RAID 0/1/0+1/5 JBOD Operating Systems Supported: Windows 2000 / XP / 2003 Server/2008 Server / Vista / Win 7 32&64bit Features: Chipset: Silicon Image SiI 3132. Supports NCQ, Port Multiplier. 48 bits LBA can Break Capacity-Limit to Support HDD larger than 137GB. Hot-plug capability. Fully compliant with Serial ATA 1.0 specifications. Independent Link, Transport, and data FIFO. Independent command fetch, scatter/gather, and command execution. Supports Legacy Command Queuing (LCQ). Supports Native Command Queuing (NCQ). Supports Non-zero offsets NCQ. Supports Out of order data delivery NCQ. Supports FIS-based switching with Port Multipliers. 31 Commands and Scatter/Gather Tables per Port. Two Pin headers on board for LED connection....