SIOM 4-port 25GbE SFP28 Mellanox CX-4 Lx EN

Main Specifications
Device Type: Ethernet Controller Card
Dimensions (WxDxH): Card PCB dimensions: 92mm (3.62in) x 87.1mm (3.43in) (W x D)
Form Factor: Super I/O Module (SIOM)
CPU Offloads: RDMA over Converged Ethernet (RoCE), TCP/UDP/IP stateless offload, LSO, LRO, checksum offload, RSS (can be done on encapsulated packet), TSS, HDS, VLAN insertion/stripping, Receive flow steering, Intelligent interrupt coalescence

Networking
Ethernet: 25GbE / 10GbE, IEEE 802.3ad, 802.1AX Link Aggregation, IEEE 802.1Q, 802.1P VLAN tags and priority, IEEE 1588v2, Jumbo frame support
Networking: Wired
Data Transfer Rate: 25Gbps
Enhanced Features: Hardware-based reliable transport, Collective operations offloads, Vector collective operations offloads, 64/66 encoding, Dynamically Connected transport (DCT), Enhanced Atomic operations, Support for MSI/MSI-X mechanisms
Storage Offloads: Stateless offloads for overlay networks and tunneling protocols, Hardware offload of encapsulation of NVGRE and VXLAN overlay networks
Port Quantity: Quad SFP28 connectors with speed up to 25Gbps per port
Hardware-based I/O Virtualization: Single Root IOV, Multi-function per port, Multiple queues per virtual machine, VMware NetQueue support
Virtualization Features SR-IOV: Up to 256 Virtual Functions, SR-IOV: Up to 16 Physical Functions per port
Management Features: Remote boot over iSCSI, PXE and UEFI, NC-SI for remote management

Power
Consumption Operational: 20W

Environmental Parameters
Operating Temperature: 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

Software / System Requirements
OS Supports: RHEL/CentOS (7.2, 7.1, 7.0, 6.8, 6.7, 6.6, 6.5, 6.2)
Windows (2012 R2, 2012)
FreeBSD (11)
VMware (6.5, 5.5)