The HPE Smart Array P204i-b SR Gen10 Controller, supporting 12Gb/s SAS and PCIe 3.0, is ideal for maximizing performance while supporting advanced RAID levels with 1 GB flash-backed write cache (FBWC). This controller operates in Mixed Mode which combines RAID and HBA operations simultaneously. It has four internal SAS lanes, allowing connection to SAS or SATA drives, and provides enterprise-class storage performance, reliability, security and efficiency needed to address your evolving data storage needs. This controller offers enhanced security by encrypting data-at-rest on any drive with HPE Smart Array SR Secure Encryption. The Gen10 controllers are supported by the HPE Smart Storage Battery, which supports multiple devices and is sold separately.