The ThinkSystem QLogic QL45214, QL45212 and QL45262 network adapters for Lenovo Flex System are based on eighth-generation Ethernet technology from Cavium and feature Universal Remote Direct Memory Access (RDMA) to offer concurrent support for RoCE, RoCE v2, and iWARP. The adapters are for customers looking for end-to-end 50 Gb and 25 Gb Ethernet speeds in their Flex System environment as well as those who want to maintain their existing 10Gb networking infrastructure while preparing for future upgrades to 25Gb or 50 Gb network speeds. This product guide provides essential presales information to understand the QLogic 25/50 GbE Flex adapters and their key features, specifications, and compatibility. This guide is intended for technical specialists, sales specialists, sales engineers, IT architects, and other IT professionals who want to learn more about the adapters and consider their use in a Flex System solution.