Highpoint Technologies RR644LS 4PORT EX 6GB/S SATA RAID PCIE 1X SFF-8088 PCIE 2.0 X4 RAID HBA Please ensure that your original part number matches this exactly, or check with the manufactuer for compatiblity. Customers are responsible for compatiblity. This part is guaranteed to be fully functional, original and authentic. Highpoint Technologies HighPoint RocketRAID 2720 PCI-Express 2.0 x8 ... RR644LS