The Lenovo ThinkSystem 440-8e and 440-16e SAS/SATA 12Gb HBAs are high performance PCIe 4.0 host bus adapters for external storage connectivity in ThinkSystem servers. The adapters provide either two or four x4 external mini-SAS HD connectors to provide connectivity to external storage devices such as ThinkSystem DE Series storage and LTO9 tape drives. This product guide provides essential presales information to understand the ThinkSystem external HBAs 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 HBAs and consider their use in IT solutions.