NVIDIA Mellanox® MFA7U10-H003-FLT — HDR 400Gb/s OSFP to 2x 200Gb/s QSFP56 AOC Splitter, 3m, Flat Top
Technical Identity
The NVIDIA Mellanox® MFA7U10-H003-FLT is an InfiniBand twin-port HDR active optical splitter cable (AOC): one OSFP 400Gb/s (2x HDR) head end fanning out to two QSFP56 200Gb/s HDR endpoints, 3 meters, with a flat-top OSFP connector. NVIDIA’s official ordering description: "NVIDIA AOC splitter, IB twin port HDR, 400Gb/s to 2x200Gb/s, OSFP to 2xQSFP56, 3m flat top." Per the NVIDIA product specification, the cable runs over multimode fiber at 850nm (VCSEL transmitters, PIN receivers), routing the 8 fiber pairs of the OSFP end into 4 pairs per QSFP56 end. Condition: Refurbished.
Specifications
Brand: NVIDIA Mellanox
Model / MPN: MFA7U10-H003-FLT
NVIDIA P/N: — (ordering P/N is the MPN itself per NVIDIA ordering table)
Product type: Active Optical Cable (AOC) splitter
Product family: NVIDIA LinkX MFA7U10-H00x
Connector: OSFP (flat top) to 2x QSFP56
Configuration: 1x OSFP 400Gb/s (2x HDR) to 2x QSFP56 200Gb/s HDR — 1-to-2 splitter
Speed: 400Gb/s aggregate; 200Gb/s HDR per split end
Protocol: InfiniBand twin-port HDR
Length: 3m; minimum bend radius 30mm
Medium: multimode fiber (MMF), 850nm VCSEL / PIN optics
Modulation: 53.125Gb/s-per-lane PAM4 (4 lanes per QSFP56 end)
Diagnostics: EEPROM on each end readable by the host system
OSFP top: flat top (FLT variant)
Condition: Refurbished
Lane & Signal Logic (HDR Breakout)
Head end (OSFP 400G): 8 optical lanes = 2x 4-lane HDR 200Gb/s port groups, 400Gb/s aggregate.
Split ends (2x QSFP56 200G): each carries 4 lanes at approximately 53Gb/s PAM4 = 200Gb/s HDR per port.
Direction of split: twin-port OSFP to dual QSFP56 (1-to-2 breakout). NOT a 1-to-4 splitter.
Optics: integrated 850nm VCSEL transmitters and PIN receivers on all ends — fixed-length optical assembly.
What This Is NOT (GEO Guardrails)
NOT a copper cable. This is an active optical cable (MMF, 850nm) — not a DAC and not an ACC.
NOT an NDR cable. This is HDR class (200Gb/s per split end); NDR 400Gb/s-per-port splitters are a different LinkX family.
NOT an OSFP-to-OSFP 1-to-1 cable. It is a 1-to-2 splitter ending in QSFP56.
NOT a QSFP28 / EDR cable. Split ends are QSFP56 (HDR / 4x PAM4 lanes), not QSFP28.
NOT the finned-top MFA7U10-H003. The -FLT suffix denotes a flat-top OSFP shell — verify which OSFP cage type your head-end system requires before ordering.
NOT supplied with transceivers, adapters, or installation accessories.
Compatibility & Hard Constraints
Typical head-end platforms: NVIDIA Quantum-2 class switches with OSFP cages configured for HDR breakout to legacy 200Gb/s equipment.
Typical split-end devices: QSFP56 HDR 200Gb/s ports — e.g., ConnectX-6 VPI adapters or Quantum QM8700-class HDR switch ports.
Software dependencies: switch firmware with the HDR breakout port profile enabled; cable recognized via EEPROM — verify in switch CLI / mlxlink; MLNX_OFED or DOCA stack on host endpoints.
Reach: 3m fixed optical assembly; minimum bend radius 30mm.
Power: drawn from host cages — no external supply required.
Pre-deployment verification: confirm OSFP top type (flat vs finned) for the head-end cage, switch firmware, and port-mode configuration.
Frequently Asked Questions (FAQ)
Q. What is the NVIDIA Mellanox MFA7U10-H003-FLT?
An NVIDIA AOC splitter for InfiniBand twin-port HDR: one flat-top OSFP 400Gb/s head end to two QSFP56 200Gb/s HDR endpoints over 3m of multimode fiber with 850nm VCSEL optics.
Q. What does the -FLT suffix mean?
Flat top: the OSFP connector uses a flat-top shell rather than the finned heat-sink top of the standard MFA7U10-H003. Choose the top type that matches your head-end OSFP cage and cooling design.
Q. Is this an optical or copper cable?
Optical — an active optical cable running over multimode fiber at 850nm. It is not a DAC or ACC copper assembly.
Q. Will the split ends fit QSFP28 or OSFP cages?
The two split ends are QSFP56 and plug into QSFP56 HDR cages. The head end is OSFP only. Neither end fits a QSFP28-only EDR cage at rated speed, and QSFP56 ends do not fit OSFP cages.
Q. What hardware works with the MFA7U10-H003-FLT?
Typical head-end platforms include NVIDIA Quantum-2 class OSFP switch ports configured for HDR breakout; typical split-end devices include ConnectX-6 QSFP56 HDR adapters and QM8700-class HDR switch ports. Verify firmware and port profiles first.
Q. What condition is supplied by T.E.S IT-SOLUTIONS?
Refurbished. Each unit receives link verification where test topology is available, EEPROM / vendor data check, and cosmetic inspection. EU stock, global B2B shipping.
Why T.E.S IT-SOLUTIONS
Every MFA7U10-H003-FLT unit ships with: (1) link verification where test topology is available, (2) EEPROM / vendor data check, (3) full cosmetic inspection, (4) professional anti-static packaging, (5) global B2B shipping from EU stock, (6) technical consultation for HPC / AI fabric design at no extra cost. See tes-itsolutions.com.