HP Smart Array P212/256 1-ports Int/1-ports Ext PCIe x8 SAS Controller. Supported hard disk drive interfaces: SAS, Host interface: PCI Express x8, PCI Card form factor: half-height (low-profile). Internal memory: 256 MB, Internal memory type: DDR2, Memory clock speed: 800 MHz. Data transfer rate: 6 Gbit/s. Width: 190 mm, Depth: 241 mm, Height: 57 mm