SFP or SFP+
Dual-port SFP GbE NIC - 1Gb Ethernet SFP Adapter - Bandwidth 4 Gbps. Dual-port (2) SFP GbE NIC, Gen2 PCIe x4, with Intel 82580 controller, low-profile. Ships with both low-profile & full-height brackets.
4-Port SFP GbE NIC - 1Gb Ethernet SFP Adapter - Bandwidth 8 Gbps. Low-profile, Quad-port (4) SFP GbE NIC, Gen2 PCIe x4, with Intel I350 controller. Supports both fiber optic and RJ45 copper transceivers. Ships with low-profile & full-height brackets.
1Gb Ethernet SFP Adapter - Bandwidth 12 Gbps. Low-profile, Six-port (6) SFP GbE NIC, Gen2 PCIe x4, with two Intel I350 controllers. Supports both fiber optic and RJ45 copper transceivers.
10Gb Ethernet SFP+ Adapter - Bandwidth 54 Gbps. Low-profile, Dual-port (2) - 10GbE SFP+ NIC, Gen2 PCIe x8, with Intel 82599 controller. Ships with both low-profile & full-height brackets.
10Gb Ethernet SFP+ Adapter - Bandwidth 100 Gbps. Low-profile, Quad-port (4) 10GbE SFP+ NIC, Gen3 PCIe x8, with Intel XL710 controller, low-profile. Ships with both low-profile & full-height bracket.