PCI Express 2.0 - 2.5 GT/s (x8) or 5.0 GT/s (x4), Dual channel/ multi-mode optic interface - 8Gb/s / 4Gb/s or 2Gb/s FC Link speeds automatically detected - Integrated data buffer and code space memory | Unparalleled manageability, reliability, performance and ease of deployment with streamlined installation and management | Common Driver supports multiple generations of Emulex HBAs on a given OS platform.