Adaptec 51245 16-port SAS RAID Controller - Serial ATA/300 - PCI Express x8 - Plug-in Card - RAID Supported - 0, 1, 1E, 5, 5EE, 6, 10, 50, 60 RAID Level - 4 Total SAS Port(s) - 3 SAS Port(s) Internal - 1 SAS Port(s) External - 2268100-R More for the money with this high quality Product Offers premium quality at outstanding saving Excellent product 100% satisfaction