Features: brand new and high quality With 2-Port Sata PCI-E 3.0 GEN3 expansion card, supports Sata revision 3.0 transfer speeds of up to 6 Gb / s. PCI-E 3.0 GEN3 chipset: JMICRON + JMB582, Supported IDE / AHCI programming interface. Plug and for play, supports hot plugging.Just stuck it in and drives from old install started working. for Serial Sata Version 3.0 and PCI-E 2.0 specification, 2 Port Sata 3.0 Interfaces Connect 2 mass storage devices at the same for time. for Windows XP/Server 2003 2008 /Vista 10/ Linux OS Specifications: Item: 2-Port Sata PCI-E 3.0 GEN3 Expansion Card Size: approx 6.8x5.4x12cm/2.6x2.1x4.7in Bus Type: PCI-E 1X (for 1X, 4X, 8X, 16X) Color: Black Speed: 6Gb/s 2U Chassis: support with half-height baffle Main Chipset: JMICRON JMB582 for : for Windows XP/Server 2003 2008 /Vista 10/ Linux OS Package Includes: 1 Pc x PCIE Sata Expansion Card note: There might be little error of size for manual measurement. The colors deviation might differ due to different monitor settings, please kindly understand.