ConnectX-3 Pro adapter cards with 10/40/56 Gigabit Ethernet connectivity with hardware offload engines to Overlay Networks (“Tunneling”), provide the highest performing and most flexible interconnect solution for PCI Express Gen3 servers used in public and private clouds, enterprise data centres, and high performance computing.


  • 1us MPI ping latency
  • PCI Express 3.0 (up to 8GT/s)
  • CPU offload of transport operations
  • Application offload
  • Precision Clock Synchronization
  • HW Offloads for NVGRE and VXLAN
  • encapsulated traffic
  • End-to-end QoS and congestion control
  • Hardware-based I/O virtualization
  • 17mm x 17mm RoHS-R


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Model Number

ConnectX-3 Pro MCX311A

Network Ports

Single 10GbE

Dimension Bracket

14.2cm x 5.3cm Dimension w/o bracket

PCI Express Interface

  • PCIe Base 3.0 compliant, 1.1 and 2.0 compatible
  • 2.5, 5.0, or 8.0GT/s link rate x8
  • Auto-negotiates to x8, x4, x2, or x1
  • Support for MSI/MSI-X mechanisms


  • Interoperable with 10/40GbE Ethernet switches
  • Interoperable with 56GbE Mellanox Switches
  • Passive copper cable with ESD protection
  • Powered connectors for optical and active cable support
  • QSFP to SFP+ connectivity through QSA module


  • IEEE Std 802.3ae 10 Gigabit Ethernet
  • IEEE Std 802.3ae 40 Gigabit Etherne
  • IEEE Std 802.3ad Link Aggregation
  • EEE Std 802.3az Energy Efficient Ethernet
  • IEEE Std 802.1Q, .1P VLAN tags and priority
  • IEEE Std 802.1Qau Congestion Notification
  • IEEE Std 802.1Qbg
  • IEEE P802.1Qaz D0.2 ETS
  • IEEE P802.1Qbb D1.0 Priority-based Flow Control
  • IEEE 1588v2
  • Jumbo frame support (9600B)

Operating Sytems

  • Citrix XenServer 6.1
  • RHEL/CentOS 5.X and 6.X, Novell SLES10 SP4; SLES11 SP1 , SLES 11 SP2, OEL, Fedora 14,15,17, Ubuntu 12.04
  • Windows Server 2008/2012/2012 R2
  • FreeBSD
  • OpenFabrics Enterprise Distribution (OFED)
  • OpenFabrics Windows Distribution (WinOF)
  • VMware ESXi 4.x and 5.x

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