X520-AO2 Add-On 2-Open-Ports 10GB/s SFP+ PCI-Ex8 ( for GBIC, SFP, SFP+, SFP-T, X2, XFP & XENPAK ) LP
Network Upgrade Add-On Card - 10GBase-SR & 10GBase-LR - Network Interface Card - PCI-Express 2.1 x8 Bus - 2-Port - Intel 82599ES Chipset - 2x Open Module Slots - 3 Year Depot Carry-In Mfg. Warranty