Form Factor: Plug-in card, Interface (Bus) Type: PCI Express 3.0 x8, Ports: 10Gb Ethernet x 2, Dimensions (WxDxH): 10 cm x 8 cm, Weight: 13 g, Data Link Protocol: 10 GigE, Data Transfer Rate: 10 Gbps, Warranty: 01 Year Limited Warranty. The Lenovo Flex System CN4052S Virtual Fabric Network Adapter offer CN4052S 10 GbE connections and are cost and performance-optimized for integrated and converged infrastructures.