NVIDIA Mellanox MCX516A-CCAT ConnectX-5 EN Network Adapter Card

NVIDIA Mellanox MCX516A-CCAT Specifications

Core Specifications
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Product Line: ConnectX-5 EN (Ethernet Only)
Part Number: MCX516A-CCAT
Number of Ports: Dual-Port (2 Ports)
Connector Type: QSFP28 (supports copper and optical cables)
Host Interface: PCI Express 3.0 x16 (backward compatible with PCIe 2.0 and 1.1)

Protocol Support & Data Rates
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Network Protocol: Ethernet Only (Does NOT support InfiniBand)
Ethernet Speeds: 1, 10, 25, 40, 50, and 100 Gb/s per port
Max Bandwidth: 200 Gb/s combined throughput
Latency: ~750 nanoseconds (0.75 microsecond) ultra-low latency
Message Rate: Up to 148 million messages per second (Mpps)
Ethernet Compliance: IEEE 802.3bj/bm (100GbE), 802.3by (25GbE), 802.3ba (40GbE), 802.3ae (10GbE)

Power & Airflow Requirements
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Typical Power (Passive Cables): 16.2 Watts
Maximum Power (Passive Cables): 19.0 Watts
Maximum Power (1.5W Active Cables): 22.3 Watts
Maximum Power (2.5W Active Cables): 24.6 Watts
Voltage: 12V
Max QSFP28 Port Power: 5W available per port

Environmental Parameters
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Operating Temperature: 0C to 55C
Storage Temperature: -40C to 70C
Operating Humidity: 10% to 85% relative humidity
Operating Altitude: Up to 3050 meters

Physical Form Factor
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Card Dimensions: 5.6 in. x 2.71 in. (142.24 mm x 68.90 mm)
Form Factor: PCIe Half-Height, Half-Length (HHHL) / Low-Profile capable
Default Bracket: Tall / Standard Full-Height Profile Bracket (Short bracket often included)

Advanced Features
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Virtualization Acceleration: SR-IOV (Up to 512 Virtual Functions / 8 Physical Functions per port)
Storage Offloads: RoCE v1/v2 (RDMA over Converged Ethernet), NVMe over Fabrics (NVMe-oF) target offloads, iSER, SMB Direct
Network Offloads: Open vSwitch (OVS) offloads, VXLAN, NVGRE, Geneve encapsulation/decapsulation
Stateless Offloads: TCP/UDP/IP checksum offloads, LSO, LRO
Security: Secure Boot, Secure Firmware Updates