Specification
• General
- Mellanox ConnectX®-4 Lx EN dual-port 25Gbps controller
- Compact size low-profile standard form factor
- PCI-E x8 3.0 (8GT/s, 5GT/s or 2.5GT/s) interface
- Dual SFP28 connectors
- Typical power consumption: 8.7W
• Host Interface
- PCI-E 3.0
- Message Signal Interrupt (MSI-X)
• Networking features
- 25G Ethernet Consortium 25 Gigabit Ethernet
- IEEE802.3ae 10 Gigabit Ethernet
- IEEE802.3az Energy Efficient Ethernet
- IEEE 802.3ap based auto-negotiation and KR startup
- IEEE 802.ad, 802.1AX Link Aggregation
- IEEE 802.1Q, 802.1p VLAN tags and priority
- IEEE802.1Qau (QCN) ¡V Congestion Notification
- IEEE 802.1Qaz (ETS)
- IEEE 802.1Qbb (PFC)
- IEEE 802.1Qbg
- IEEE 1588v2
- Jumbo frame support (9.6KB)
• CPU Offload Features
-
RDMA over Converged Ethernet (RoCE)
- TCP/UDP/IP stateless offload
- LSO, LRO, checksum offload
- RSS, TSS, HDS, VLAN insertion/stripping. Receive flow
steering
- Intelligent interrupt coalescence
• Storage Offloads
-
RAID offload ¡V erasure coding (Reed-Solomon) offload
• Management Features
- Asset Management features with thermal sensor
- NC-SI for IPMI Support
• Overlay Networks
- Stateless offloads for overlay networks and tunneling protocols
- Hardware offload of encapsulation and decapsulation of NVGRE
and VXLAN overlay networks
• Hardware-Based I/O Virtualization
- Single Root IOV
- Multi-function per port
- Address translation and protection
- Multiple queues per virtual machine
- Enhanced QoS for vNICs
- VMware NetQueue support
• Virtualization Features
- SR-IOV: up to 256 Virtual Functions
- SR-IOV: up to 16 Physical Functions per port
- 1K ingress and egress QoS levels
- Guaranteed QoS for VMs
• Operating System Support
- RHEL/CentOS
- Windows
- FreeBSD
- VMware
- OpenFabrics Enterprise Distribution (OFED)
- OpenFabrics Windows Distribution (WinOF-2)
• Remote Boot
- Remote boot over iSCSI
- PXE and UEFI
• Operating Conditions
- Operating temperature: 0°C to 55°C (32°F to 131°F)
- Storage temperature: -40°C to 70°C (-40°F to 158°F)
- Storage humidity: 90% non-condensing relative humidity at 35°C
• Physical Dimensions
- Card PCB dimensions: 14.2cm x 6.89cm (5.6in x 2.71in) (LxW)
- Height of end brackets: standard - 12cm (4.725in),
low-profile - 8cm (3.15in)
• Weight
- 89.58g (0.1975lb)
• Supported Platforms
- Motherboards with minimum PCI-E 3.0 x 8 expansion slot
-
Server Systems with LP/FH PCI-E 3.0 x 8 expansion slot
- NC-SI feature is only supported by Supermicro® motherboards with corresponding NC-SI connectors