The SIIG CN2487 Ultra ATA/133 PCI Controller Card is a 2-port ATA controller card designed for high-speed data transfer at up to 133 Mbps. It is compatible with PCI ports and RAID levels 0. This unit is from the reputable brand SIIG and is ideal for enhancing the disk controller capabilities of a computer system. Despite being untested, this controller card holds potential for improving the performance of a computer when integrated into the system.Perfect for adding extra IDE/ATA drives to older desktop PCs. Comes without the original box.Untested, sold as-is.