The Syba SY-PCI40037 5 Port SATA II Port Multiplier RAID Card is designed to provide a high performance link between a single SATA II host port and 5 SATA device ports. It expands one upstream SATA II port to 5 downstream SATA II ports. With its hot-plug and hot-swap features, it is an ideal upgrade solution to support SATA and SATA II devices for the rapidly changing data. OS Support: Windows 2000, XP, 2003, Vista,Win7, Win8, Win 8.1, Linux kernel 2.6 and above