Mellanox Mcx4121a-acut Connectx-4 Lx En Network Interface Card 25gbe Dual-port Sfp28 Pcie3.0 X8 Uefi Enabled Tall Bracket. 
 Main Specifications 
 Device Type Network Adapter 
 Form Factor Plug-in Card 
 Interface (bus) Type Pci Express 3.0 X8 
 Pci Specification Revision Pcie 1.1, Pcie 2.0, Pcie 3.0 
 Ports 25 Gigabit Sfp28 X 2 
 Dimensions (wxdxh) 5.6 In X 2.7 In 
 Data Link Protocol 25 Gigabit Lan 
 Data Transfer Rate 25 Gbps 
 Network / Transport Protocol Tcp/ip, Udp/ip, Iscsi, Udapl 
 Remote Management Protocol Rmon 2, Rmon 
 Features Mpls Support, Pxe Support, Large Send Offload (lso), Large Receive Offload (lro), Receive Side Scaling (rss), Uefi Support, Single Root I/o Virtualization (sr-iov), Energy Efficient Ethernet, Checksum Offload Support, Transmit Side Scaling (tss), Rdma Over Converged Ethernet (roce), Priority-based Flow Control (pfc), Network Controller Sideband Interface (nc-si), Virtual Extensible Lan (vxlan), Network Virtualization Using Generic Routing Encapsulation (nvgre), Extended Reliable Connected Transport (xrc), Dynamically Connected Transport (dct), User Mode Registration And Remapping Of Memory (umr), On Demand Paging (odp), Network Partitioning (npar), Raid Offload, Iscsi Extensions Over Rdma (iser), Interrupt Coalescing, Peerdirect Rdma, 64/66 Encoding, Enhanced Transmission Selection (ets), Geneve Support 
 Compliant Standardsieee 802.1q, Ieee 802.1p, Ieee 802.3ad (lacp), Ieee 802.3ap, Ieee 802.3az, Ieee 802.1ax, Ieee 802.1qbb, Ieee 802.1qaz, Ieee 1149.1, Ieee 802.1qbg, Ieee 1588v2, Ieee 1149.6