NVIDIA MCX713104AC-ADAT — ConnectX-7 Quad-Port 25/50GbE SFP56 PCIe 4.0 x16 HHHL Adapter (Refurbished)
Technical Identity
The NVIDIA Mellanox MCX713104AC-ADAT is a refurbished ConnectX-7 Ethernet network adapter (NIC) built on the seventh-generation ConnectX ASIC. It provides four independent SFP56 ports, each operating at 25GbE or 50GbE with auto-negotiation, over a PCIe 4.0 x16 host interface in a HHHL (Half-Height, Half-Length) form factor. The AC suffix indicates the Crypto-Enabled variant with hardware MACsec/IPsec inline offload and Secure Boot. Condition: Refurbished, MPN-verified, bench link-tested where topology permits.
Specifications
Brand: NVIDIA (Mellanox)
Model / MPN: MCX713104AC-ADAT
Product family: ConnectX-7 Ethernet Adapter
ASIC: ConnectX-7
Protocol: Ethernet only (this MPN is Ethernet-mode)
Ports: 4× SFP56 (independent per-port PHY)
Speed per port: 25GbE or 50GbE (PAM4) — auto-negotiation supported
Aggregate bandwidth: Up to 200Gb/s (4×50G) line rate
Host interface: PCIe 4.0 x16 (backward compatible to PCIe 3.0 / 2.0)
Form factor: HHHL (Half-Height, Half-Length) — short bracket capable
Cryptography: Crypto Enabled (AC) — inline MACsec / IPsec offload
Secure Boot: Enabled
RDMA: RoCE v1/v2
Offloads: SR-IOV, ASAP² (Accelerated Switching and Packet Processing), NVMe-oF target/initiator, GPUDirect RDMA, TCP/UDP/IP stateless offloads, VXLAN/Geneve overlay
Condition: Refurbished
What This Is NOT
NOT an InfiniBand adapter — this MPN is Ethernet only. For NDR/HDR IB, use a ConnectX-7 VPI part (e.g. MCX75510AAS-NEAT, MCX713106 OSFP variants).
NOT a 100GbE or 200GbE per-port adapter — maximum per-port rate is 50GbE. Aggregate ceiling is 4×50G = 200Gb/s.
NOT a QSFP / QSFP28 / QSFP56 / OSFP cage — uses four independent SFP56 cages. QSFP-style transceivers and breakout cables will not fit.
NOT a PCIe 5.0 card — host interface is PCIe Gen 4.0 x16.
NOT supplied with transceivers, DAC, AOC, brackets, or rail kits — sold as the adapter only.
NOT a Multi-Host or Socket-Direct variant.
Compatibility
Host: Server with PCIe 4.0 x16 slot (mechanical and electrical x16). PCIe 3.0 hosts will down-train and cap aggregate bandwidth.
Switch pairing (Ethernet): NVIDIA Spectrum-2 SN3000 series, Spectrum-3 SN4000 series, or any 25/50GbE SFP56/SFP28 switch with per-port 50G PAM4 capability. Cisco Nexus 9300-FX2/FX3, Arista 7170/7280, Juniper QFX 5120 are also typical heads.
Cables / transceivers (per port): SFP56 50G DAC, SFP56 50G AOC, SFP56 50G SR/LR transceivers, or SFP28 25G DAC/AOC/optics (auto-negotiates down). NVIDIA MMA2L20-AR (LR), MMA2P00-AS (SR) are typical 25G optics.
Drivers / OS: MLNX_OFED 5.x+ (Linux), WinOF-2 (Windows Server 2019/2022/2025), VMware ESXi 7.0U3+/8.x native nmlx5 driver.
Firmware: Update to latest NVIDIA-released firmware after installation. Use MFT (Mellanox Firmware Tools) / mlxup.
Thermal: Quad-port 50G card — verify chassis airflow meets ConnectX-7 thermal spec under load.
Frequently Asked Questions
Q. What is the MCX713104AC-ADAT?
The MCX713104AC-ADAT is a refurbished NVIDIA ConnectX-7 quad-port SFP56 Ethernet adapter. Each port runs at 25GbE or 50GbE, with PCIe 4.0 x16 host interface, HHHL form factor, Crypto Enabled, and Secure Boot Enabled.
Q. Why four SFP56 ports instead of dual QSFP?
Quad SFP56 gives four independent per-port PHYs from a single PCIe 4.0 x16 slot. Useful for connecting one server to four ToR switches at 25/50GbE without breakout cables, or for high-density 25G aggregation. Each port has its own MAC and lane assignment.
Q. Can the MCX713104AC-ADAT run InfiniBand?
No — this MPN is Ethernet only. For InfiniBand NDR/HDR/200G, choose a ConnectX-7 VPI part such as MCX713106AC-VDAT (OSFP) or a ConnectX-7 QSFP112 VPI variant.
Q. What cables and transceivers work with this card?
SFP56 DAC, SFP56 AOC, SFP56 50G SR/LR optics for 50GbE operation. SFP28 25G DAC/AOC/optics for 25GbE operation — the SFP56 cage is backward compatible with SFP28 modules. QSFP-family modules will not fit.
Q. What condition is supplied by T.E.S IT-SOLUTIONS?
Refurbished Grade A — MPN-verified, EEPROM/vendor-data read, bracket-checked, connector-inspected, and bench link-tested where topology is available. Firmware update is recommended after installation. Packed in ESD-safe anti-static packaging from EU stock.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS is a Europe-based B2B specialist in NVIDIA Mellanox data-center networking infrastructure — ConnectX, BlueField, Quantum, Spectrum, and LinkX. Every unit is identified by MPN, NVIDIA P/N, and ASIC generation before it ships. We provide multi-currency invoicing, EU stock with worldwide express logistics, and direct pre-sale technical alignment on switch / adapter / cable pairing with our engineering team — not a call center.