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: Supports two Serial ATA hard disk drives with high-speed data transfer rates up to 150MB/sec; The thin, flexible Serial ATA cable is easier to route inside a PC; Breaks the 137GB barrier! Supports various brands of large capacity Serial ATA hard disk drives; Co-exists with onboard controller; Can be used as the boot controller when a bootable hard disk drive is attached; High quality SATA cable and 15-pin SATA power cable required for SATA hard disk installation are included.