Specifications Mfr Part Number: QXG-10G2SF-CX4 Description: dual-port 10 GbE network expansion card controller: Mellanox ConnectX-4 LX connector: SFP+ interface: PCIe 3.0 x 8 transmission rates: 10Gbps supported operating systems: QTS; Windows (driver required); Linux (driver required) supported QNAP NAS: models with PCIe slots) (1 free slot required) bracket: low-profile bracket pre-installed; full-height and specialized (for selected QNAP NAS) brackets are bundled port and cable: SFP+ DAC cable (1.5M, 3M, 5M) or SFP+ optic transceiver