25 GbE dual-port network expansion card Controller: NVIDIA Mellanox ConnectX-6 Lx Connection: SFP28 PCIe interface: PCIe Gen4 x8 (backwards compatible with Gen3 and Gen2) Transfer rates: 25 Gb/s / 10 Gb/s Supported operating systems: QTS/QuTS hero; Windows (driver required); Linux (driver required) Supported QNAP NAS:Models with at least one free PCIe slot Bracket: Pre-installed low profile bracket Full-height and specialised (for selected QNAP NAS) brackets are bundled Port and cable: SFP28 DAC cable (1.5 m) or SFP28 OPTIC Transceiver Supports 25G SerDes (NRZ) Please note: 25GbE NICs are designed for data-intensive applications and enterprise IT environments. To reach the full potential of 25GbE transmission, you require high-performance hardware configurations, including: 1) At least three workstations with Intel Core i5/i7 processors (or similar) at 3.3 GHz (or higher) and NVMe SSDs. 2) A QNAP NAS with an Intel Core i5/i7 processor (or similar) with NVMe SSDs and/or Enterprise-level SATA SSDs (SLC/MLC). At least 12 SSDs are recommended. Includes: 1 x Network card; 1 x QIG; 3 x Brackets