PCI Express rev. 2.0 Specification x4 interface Converts a PCIe slot into an SFP+ fiber slot Compatible with standard SFP+ modules 16K jumbo frames IP, TCP, UDP checksum offloading Reduced CPU utilization and improved through Supports IEEE 802.1Q VLAN ID tagging and IEEE 802.1q QoS Low profile bracket included Attachment Interface PCI Express Rev. 2.0 Specification x4 Interface Media InterfaceSFP+ Connector Optical Module OptionsLR, SR Jumbo Frame16K Bytes LED Indicators LNK / ACT Per Port Typical Power Consumption4 Watts