Internal Connectors: 4 x SATA II RAID: RAID 0/1/5/10 JBOD Operating Systems Supported: Windows 2000, Server 2003 32/64-bit, XP 32/64-bit, Vista 32/64-bit Dimensions: 6.75" x 5.5" x 1.5" Features: Support Plug & Play and hot Plug Silicon Image SIL3124 Serial ATA (SATA2) host controller chipset Compliant with Gen2i, Gen2m SATA II Electrical speciation Revision 1.0 Support Native Command (NCQ), Port Multiplier, First Party DMA Parts: Lifetime limited Labor: 1 year limited