Abstract The Lenovo NVMe Enterprise Mainstream Flash Adapters in capacities of 1.92 TB and 3.84 TB are advanced data center PCIe Flash Storage Adapters optimized for mixed read-write performance, endurance, and strong data protection for System x and ThinkServer systems. They are engineered for greater performance and endurance in a cost-effective design, and to support a broader set of workloads. This product guide provides essential presales information to understand the NVMe Enterprise Mainstream Flash 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 Flash Storage Adapters and consider their use in IT solutions. Introduction The Lenovo NVMe Enterprise Mainstream Flash Adapters in capacities of 1.92 TB and 3.84 TB are advanced data center PCIe Flash Storage Adapters optimized for mixed read-write performance, endurance, and strong data protection for System x and ThinkServer systems. They are engineered for greater performance and endurance in a cost-effective design, and to support a broader set of workloads. Suggested uses: Data warehousing, Web servers, Media streaming, and Video on Demand (VOD). Did you know? NVMe (Non-Volatile Memory Express) is a technology that overcomes SAS/SATA SSD performance limitations by optimizing hardware and software to take full advantage of flash technology. The use of NVMe Flash Storage Adapters means data is transferred more efficiently from the processor to the storage compared to the legacy Advance Host Controller Interface (AHCI) stack, thereby reducing latency and overhead. These Flash Storage Adapters connect directly to the processor via the PCIe bus, further reducing latency and TCO compared to SAS/SATA SSDs. Lenovo Enterprise Mainstream Flash Adapters are suitable for mixed read-write and general-purpose data center workloads, however their NVMe PCIe interface means the adapters also offer high performance. Overall, these adapters provide outstanding IOPS/watt and cost/IOPS for enterprise solutions.