Controller: Mellanox ConnectX-4 LxConnector: SFP+PCIe interface: PCIe Gen3 x8Transmission rates: 10GbpsSupported operating systems: QTS, Windows (Driver required), Linux (Driver required)Supported QNAP NAS: Models with PCIe slot(s) (1 free slot required)Bracket: Low-profile bracket pre-installed, full-height and specialized (for selected QNAP NAS) brackets are bundledPort and cable: SFP+ DAC cable (1.5M, 3M, 5M) or SFP+ OPTIC transceiver