On-Board Cache One 240-pin DIMM socket for 2GB(default) DDR3-1866, 1RX8, ECC module - up to 4GB or 8GB DDR3-1866, 1RX8, Unbuffered/ Registered ECC module or - up to 4GB or 8GB DDR3-1600, 2RX8, Unbuffered/ Registered ECC module
Driver Connector 4 x SFF-8643 1 x SFF-8644
Drive Support Up to 256 12Gb/s SAS SAS/SATA HDDs/SSD, using 12Gb/s SAS Expander