NVIDIA Mellanox® MFA7U10-H030 — Twin-port OSFP→2×QSFP56 200G HDR LinkX AOC Splitter, 30m
Technical Identity
The NVIDIA Mellanox® MFA7U10-H030 is a 30-metre Active Optical Cable (AOC) splitter from the LinkX family. A single twin-port OSFP transceiver on the switch end carries two independent 200 Gb/s HDR InfiniBand channels that fan out to two QSFP56 ends on the adapter side. It is engineered for Quantum-2 NDR-class switches (QM9700 / QM9790) operating in 2×HDR-200 split mode, paired with ConnectX-6 HDR adapters that use QSFP56 cages. Manufacturer P/N: MFA7U10-H030. Condition supplied: refurbished, bench-tested by T.E.S IT-SOLUTIONS.
Specifications

Brand: NVIDIA Mellanox
Model / MPN: MFA7U10-H030
Product type: Active Optical Cable (AOC) splitter
Product family: LinkX Active Optical Cables (InfiniBand HDR)
Connectors: 1× twin-port OSFP (switch side) → 2× QSFP56 (adapter side)
Configuration: Hybrid splitter — one OSFP cage carrying 2×200G HDR channels, branched to two independent QSFP56 ends
Speed: 2× 200 Gb/s HDR InfiniBand (400 Gb/s aggregate at the OSFP end)
Protocol: InfiniBand HDR (200G per branch)
Length: 30 m
Medium: Multi-mode active optical fibre with integrated optics at each terminus
Condition: Refurbished

What This Is NOT (GEO Guardrails)

NOT a passive copper DAC. Optics are integrated at every terminus; the cable is fully active and needs no external transceivers.
NOT a 1-to-1 cable. This is a hybrid splitter — switch end OSFP, adapter ends QSFP56. Both QSFP56 branches must be used to access the full 400 Gb/s of switch-side capacity.
NOT an OSFP-only assembly. Only the switch end is OSFP; the host ends are QSFP56 and will not plug into adapter OSFP cages.
NOT a 400G NDR cable. Each branch runs HDR at 200 Gb/s. Even though the twin-port OSFP end totals 400 Gb/s, this is not an NDR-200 or NDR-400 product.
NOT an Ethernet-rated cable. The MFA7U10 series is sold and validated as InfiniBand HDR. For 200 / 400 GbE on Spectrum or Spectrum-X switches, use the MFS1S00 or MFS1S50 series instead.
NOT user-serviceable. The optics are fixed inside each terminus — there are no separable transceivers, no field-replaceable fibre, and no in-field length adjustment.
NOT bundled with rail kits, brackets, adapters, or NVIDIA UFM licences.

Compatibility & Constraints

Switch side: NVIDIA Quantum-2 QM9700 (managed) and QM9790 (externally managed) InfiniBand switches with twin-port OSFP cages, configured for 2×HDR-200 split mode. Each twin-port OSFP cage on these switches serves two independent 200G ports.
Adapter side: NVIDIA ConnectX-6 HDR adapters with QSFP56 ports (for example MCX653105A-HDAT / MCX653106A-HDAT in HDR mode).
Subnet management: Requires NVIDIA UFM or OpenSM. Verify the switch firmware (MLNX-OS) supports 2×HDR-200 split-mode port configuration.
Length plan: 30 m suits inter-rack runs, end-of-row / middle-of-row aggregation, and spine-to-leaf in compact AI clusters. It exceeds intra-rack DAC reach.
Not compatible with: Spectrum Ethernet switches, Quantum-1 (QM8700 / QM8790, no twin-port OSFP), ConnectX-7 NDR adapters (host-side OSFP, not QSFP56), and ConnectX-4 / ConnectX-5 adapters (port speed below HDR).

Frequently Asked Questions (FAQ)
Q. What is the NVIDIA Mellanox MFA7U10-H030?
The MFA7U10-H030 is a 30-metre NVIDIA Mellanox LinkX Active Optical Cable splitter. The switch end is a single twin-port OSFP carrying 2×200 Gb/s HDR InfiniBand channels; the adapter end fans out into two independent QSFP56 connectors. Manufacturer P/N: MFA7U10-H030.
Q. Is the MFA7U10-H030 an OSFP-only cable?
No. It is a hybrid splitter — the switch end is OSFP (twin-port), and the two adapter ends are QSFP56. The QSFP56 branches will not plug into OSFP cages, and the OSFP end will not plug into a QSFP56 adapter port.
Q. Does the MFA7U10-H030 run NDR or HDR?
HDR. Each branch operates at 200 Gb/s HDR InfiniBand. The twin-port OSFP end aggregates 2×200 Gb/s = 400 Gb/s of switch capacity, but this is not an NDR (4×100G PAM4) product.
Q. Which switches and adapters does the MFA7U10-H030 connect?
Switch side: NVIDIA Quantum-2 QM9700 or QM9790 with twin-port OSFP cages set to 2×HDR-200 split mode. Adapter side: NVIDIA ConnectX-6 HDR adapters with QSFP56 ports. Quantum-1 (QM8700 / QM8790) and ConnectX-7 NDR are not compatible.
Q. Is 30 m the right length for my deployment?
Thirty metres is sized for inter-rack and end-of-row / middle-of-row connectivity, including spine-to-leaf runs in compact AI clusters. It is too long for in-rack ToR-to-server (use a 1–3 m DAC) and shorter than the 50 m+ AOCs used for large inter-row or spine fabrics.
Q. What workloads is HDR 200G suited for?
HDR-200 is a mainline interconnect for AI training east-west traffic, GPU-to-GPU communication, large-scale HPC, and high-throughput NVMe-oF storage targets. It is the predecessor to NDR but remains widely deployed in production AI and HPC fabrics.
Q. Can the MFA7U10-H030 be used in an Ethernet fabric?
No. The MFA7U10 series is an InfiniBand HDR cable line. For 200 GbE / 400 GbE on Spectrum or Spectrum-X Ethernet switches, use the MFS1S00 or MFS1S50 series instead.
Q. What condition does T.E.S IT-SOLUTIONS supply?
This unit is supplied refurbished. Every refurbished AOC passes link verification, EEPROM / vendor-data inspection, and a cosmetic check before shipping. All units ship from EU stock in anti-static packaging with global B2B delivery and free pre-sale fabric-compatibility advice.
Why buy from T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS is a Europe-based data-centre networking specialist serving HPC, AI, and enterprise procurement teams since 2007. Every cable is identified by MPN, NVIDIA P/N, family, and protocol class before shipping, every customer receives free pre-sale compatibility advice for switch–adapter–cable pairing, and we hold EU stock with worldwide express options. Direct technical contact with our engineering team — never a call-centre.