SIIG's long-term business vision, comprehensive product line, effective marketing strategy and exceptional customer support have made SIIG the leading brand for computer add-on products. High-quality control standards are evident by one of the lowest defective return rates in the industry. PRODUCT FEATURES: PCI Express 1-lane (x1) SATA II adapter works with PCI Express slots with different lane width; Installs in any available PCI Express slot; Featuring the latest eSATA (external SATA) connector to provide the most convenient way to add high speed, high capacity hard disk drives; Supports hard disk hot-plugging.