Are you looking for an enterprise-level controller to maximize performance and storage capacity without occupying a PCI Express (PCIe) expansion slot? The HPE Smart Array P48i-a SR Gen1 Controller, supporting 12 Gb/s SAS and PCIe 3., provides enterprise-class storage performance, reliability, security and efficiency needed to address your evolving data storage needs. This controller has eight internal SAS lanes, allowing connection to SAS or SATA drives, supports Mixed Mode operations of RAID and HBA simultaneously, and offers encryption for data-at-rest on any drive. The Smart Array P48i-a SR Gen1 Controller is ideal for maximizing performance while supporting advanced RAID levels with 2 GB Flash-Backed Write Cache (FBWC). This type-a modular controller occupies a dedicated storage slot without occupying a PCIe expansion slot. The Gen1 controllers are supported by the HPE Smart Storage Battery. The HPE Smart Storage Battery supports multiple devices and is sold separately. * Transfer rate : 12Gb/s SAS per lane 6Gb/s SATA per lane PCI Express 3. x8 lane width * Form factor : Type-a modular controller * Ports : Internal: 8 SAS lanes across 2 x4 Mini-SAS ports * Cache : 2 GB Flash-Backed Write Cache