FASTTRAK TX4650 PCIE X1 SAS/SATA 3GBS 0/1/5/10 The Promise FastTrak SAS/SATA RAID PCI Express adapter offers a cost-effective solution for implementing a RAID 0, RAID 1 RAID 5 or RAID 10 storage system with up to four high-performance SAS or SATA disk drives. The FTTX4650 also includes RAID 5 & 10 using Promise's enterprise proven technology. The flexible FastTrak family allows you to choose the best fit for your application.