HOMENetwork AdaptersNetwork CardsDual-port 5-Speed 10GBASE-T PCI Express (PCIe) NIC for NAS or PC QNAP 21-20426 Dual-port 5-Speed 10GBASE-T PCI Express (PCIe) NIC for NAS or PC SKU #21-20426 Oh oh! That product is no longer available... Check out these alternatives LevelOne GNC-0103SX Gigabit Ethernet Fiber PCI Card, SC connector, 32/64bit 1... Details LevelOne GNC-0105T Gigabit PCI Network Card Details LevelOne GNC-0112 Gigabit PCIe Network Card Details LevelOne GNC-0124 Gigabit Fiber PCIe Network Card, Quad SFP, 4x PCIe Details VIEW ALL Network Cards