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Mellanox MCX555A-ECAT Network Adapter ConnectX-5 VPI, 100GBase-X

  • Tag Matching and Rendezvous Offloads

  • Adaptive Routing on Reliable Transport

  • NVMe over Fabric Offloads NVMe Device

  • Back-End Switch Elimination by Host Chaining

Network Adapter ConnectX-5 VPI, 100GBase-X, PCIe 3.0 x16, Optical Fiber



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    ConnectX-5 delivers high bandwidth, low latency, and high computation efficiency for high performance, data-intensive and scalable compute and storage platforms. ConnectX-5 offers enhancements to HPC infrastructures by providing MPI and SHMEM/PGAS and Rendezvous Tag Matching offload, hardware support for out-of-order RDMA Write and Read operations, as well as additional Network Atomic and PCIe Atomic operations support.

    ConnectX-5 VPI utilizes both IBTA RDMA (Remote Data Memory Access) and RoCE (RDMA over Converged Ethernet) technologies, delivering low-latency and high performance. ConnectX-5 enhances RDMA network capabilities by completing the Switch Adaptive-Routing capabilities and supporting data delivered out-of-order, while maintaining ordered completion semantics, providing multipath reliability and efficient support for all network topologies including DragonFly and DragonFly+.

    ConnectX-5 also supports Burst Buffer offload for background checkpointing without interfering in the main CPU operations, and the innovative transport service Dynamic Connected Transport (DCT) to ensure extreme scalability for compute and storage systems.


    • Tag Matching and Rendezvous Offloads

    • Adaptive Routing on Reliable Transport

    • Burst Buffer Offloads for Background Checkpointing

    • NVMe over Fabric (NVMf) Offloads NVMe Device

    • Back-End Switch Elimination by Host Chaining

    • Embedded PCIe Switch

    • Enhanced vSwitch/vRouter Offloads

    • Flexible Pipeline

    • RoCE for Overlay Networks

    • PCIe Gen 4 Support

    Extra Specifications for Mellanox MCX555A-ECAT Network Adapter ConnectX-5 VPI, 100GBase-X

    Main Specifications
    Device Type100Gigabit Ethernet Card
    Form FactorPlug-in Card
    Interface (Bus) TypePCI Express 3.0 x16
    Dimensions (WxDxH)Width 2.7in x Depth 5.6in
    InfiniBandEDR / FDR / QDR / DDR / SDR, IBTA Specification 1.3 compliant, RDMA, Send/Receive semantics, Hardware-based congestion control, Atomic operations, 16 million I/O channels, 256 to 4Kbyte MTU, 2Gbyte messages, 8 virtual lanes + VL15
    CPU OffloadsRDMA over Converged Ethernet (RoCE), TCP/UDP/IP stateless offload, LSO, LRO, checksum offload, RSS (also on encapsulated packet), TSS, HDS, VLAN and MPLS tag insertion/stripping, Receive flow steering, Data Plane Development Kit (DPDK) for kernel bypass applications, Open vSwitch (OVS) offload using ASAP2: Flexible match-action flow tables, Tunneling encapsulation/de-capsulation, Intelligent interrupt coalescence, Header rewrite supporting hardware offload of NAT router
    ConnectorsSingle-port QSFP28
    Ethernet100GbE / 50GbE / 40GbE / 25GbE / 10GbE / 1GbE, IEEE 802.3bj, 802.3bm 100 Gigabit Ethernet, IEEE 802.3by, Ethernet Consortium 25, 50 Gigabit, Ethernet, supporting all FEC modes, IEEE 802.3ba 40 Gigabit Ethernet, IEEE 802.3ae 10 Gigabit Ethernet, IEEE 802.3az Energy Efficient Ethernet (fast wake), IEEE 802.3ap based auto-negotiation and KR startup, IEEE 802.3ad, 802.1AX Link Aggregation, IEEE 802.1Q, 802.1P VLAN tags and priority, IEEE 802.1Qau (QCN) Congestion Notification, IEEE 802.1Qaz (ETS), IEEE 802.1Qbb (PFC), IEEE 802.1Qbg, IEEE 1588v2, Jumbo frame support (9.6KB)
    Enhanced FeaturesHardware-based reliable transport, Collective operations offloads, Vector collective operations offloads, Mellanox PeerDirect RDMA (aka GPUDirect) communication acceleration, 64/66 encoding, Extended Reliable Connected transport (XRC), Dynamically Connected transport (DCT), Enhanced Atomic operations, Advanced memory mapping support, allowing user mode registration and remapping of memory (UMR), On Demand Paging (ODP), MPI Tag Matching, Rendezvous protocol offload, Out-of-order RDMA supporting Adaptive Routing, Burst buffer offload, In-Network Memory registration-free RDMA memory access
    Storage OffloadsNVMe over Fabric offloads for target machine, T10 DIF Signature handover operation at wire speed, for ingress and egress traffic, Storage protocols: SRP, iSER, NFS RDMA, SMB Direct, NVMe-oF
    NamePart NumberQuantityDescription

    Warranty:1 year
    Phone No.:408-916.0055
    URL:Click here for Manufacturer Website
    Coverage:Replacement or repair
    Average Service Time:1-2 weeks

    If you need Technical Support for this item please contact:

    Type of Support:FULL
    Phone No.:408-916-0055
    URL:Click here for Manufacturer Website