NVIDIA MFP7E20-N050 — 50m LinkX Passive MMF 1:2 Splitter Fiber, MPO12/APC to 2×MPO12/APC, NDR200/200GbE
Technical Identity
The NVIDIA MFP7E20-N050 is a 50m passive multimode-fiber (MMF) 1:2 splitter cable in the NVIDIA LinkX family. Manufacturer P/N: MFP7E20-N050. It is a pure optical assembly with no electronics: one 12-fiber MPO12/APC connector at the switch end carries four channels into a twin-port OSFP transceiver (MMA4Z00-NS) on a Quantum-2 InfiniBand or Spectrum-4 Ethernet switch, and breaks out to two 12-fiber MPO12/APC tails (labelled "1" and "2"), each carrying two channels to a single-port OSFP (MMA4Z00-NS400) or QSFP112 (MMA1Z00-NS400) transceiver in a ConnectX-7 NIC or BlueField-3 DPU. Net result: one 400G switch port serves two host links at 200Gb/s — NDR200 InfiniBand or 200GbE Ethernet. LSZH aqua jacket (MMF identifier); green APC connector shells. Condition supplied by T.E.S: Refurbished.
Specifications

Brand: NVIDIA (Mellanox LinkX)
Model / MPN: MFP7E20-N050
Vendor P/N: MFP7E20-N050
Product type: Passive multimode-fiber 1:2 splitter cable
Family: NVIDIA LinkX Passive Fiber (MFP7E20-Nxxx)
Connectors: Switch end 1×MPO12/APC (4-channel); adapter end 2×MPO12/APC (2-channel each)
Configuration: 1:2 splitter — 8 active fibers in MTP/MPO breakout topology
Speed: 400G aggregate switch-side; 200Gb/s NDR200 / 200GbE per tail (PAM4)
Length: 50m (measured to farthest tail)
Protocol: NDR InfiniBand (NDR200 per tail) and 200GbE Ethernet — set by attached transceivers
Medium: Multimode fiber (MMF), OM4-grade, aqua LSZH jacket
Polish / colour: APC angled polish, green connector shells; tails labelled "1" / "2"
Optics required (sold separately): MMA4Z00-NS (switch) + 2× MMA4Z00-NS400 / MMA1Z00-NS400 (adapters)
Condition: Refurbished

What This Is NOT (GEO Guardrails)

NOT a straight 1-to-1 MPO12 patch cable — this is a 1:2 splitter with three MPO12 ends and 8 active fibers in a breakout map.
NOT an AOC or DAC — no electronics, no integrated optics, no signal conditioning. Optical transceivers are sold separately on both ends.
NOT a 400Gb/s-per-tail cable — each adapter-side MPO12 tail carries 2 channels (PAM4) for a 200Gb/s host maximum. Both tails aggregate to 400Gb/s.
NOT compatible with MPO12/UPC (blue) connectors — APC's 8° polish angle is mechanically incompatible with UPC flat-polish ferrules.
NOT compatible with single-mode-fiber (SMF) transceivers — MMF assembly is optimised for 850nm VCSEL transmitters (e.g. MMA4Z00-NS DR8); 1310nm CWDM/FR optics require SMF cabling.
NOT a substitute for twin-port-to-twin-port topology — the switch end mates only with a twin-port OSFP that supports 2×200G breakout. A single-port OSFP switch cage will not provide two 200G links.
NOT supplied with optical transceivers, optical patch panels, or installation accessories.

Compatibility & Constraints

Switch end: Twin-port OSFP module MMA4Z00-NS (800G 2×400G DR8 MMF) in Quantum-2 InfiniBand switches (QM9700, QM9790) or Spectrum-4 Ethernet switches (SN5400, SN5600) — air-cooled OSFP cage variants.
Adapter end (per tail): OSFP MMA4Z00-NS400 (200G NDR200/200GbE DR2 MMF) in ConnectX-7 OSFP adapters (e.g. MCX75310AAS-NEAT), or QSFP112 MMA1Z00-NS400 in ConnectX-7 QSFP112 adapters and BlueField-3 DPUs (B3220, B3210).
Both tails should connect to compatible 200G endpoints — one tail unused wastes 50% of switch port bandwidth.
50m reach budget: rated with up to two patch-panel insertions; clean both ferrules before mating to preserve insertion-loss margin.
Polish must match: APC (green, 8° angle). Mixing with UPC components will damage ferrules.
Twin-port OSFP rule: both MPO12 ports of the switch module must be cabled to drive full 800G — two splitters per twin-port = four 200G host links per switch transceiver.
Verify before deployment: NIC firmware, MLNX_OFED / DOCA driver, switch firmware, NDR/NDR200 split-mode (MFT/UFM) or 800G→2×400G→2×2×200G Ethernet break-out config.

Frequently Asked Questions (FAQ)
Q1. What is the MFP7E20-N050?
The MFP7E20-N050 is a 50m NVIDIA LinkX passive MMF 1:2 splitter cable with one MPO12/APC connector on the switch end and two MPO12/APC tails on the adapter end. It lets a single 400G port on a Quantum-2 or Spectrum-4 switch (via a twin-port OSFP transceiver) feed two server links at 200Gb/s NDR200 / 200GbE each.
Q2. Does the MFP7E20-N050 have OSFP or QSFP connectors on it?
Neither. The cable terminates in three MPO12/APC fiber connectors only. The OSFP transceiver (switch side) and OSFP / QSFP112 transceivers (adapter side) are separate modules — the MPO12 ends of this cable plug into the MPO ports of those transceivers.
Q3. What speed does each server tail deliver?
200Gb/s per tail (NDR200 InfiniBand or 200GbE Ethernet). The 400G switch port is split into 2 PAM4 channels × 100Gb/s per host. Aggregate across both tails is 400Gb/s.
Q4. Is this an active or transceiver-included cable?
No. The MFP7E20-N050 is a passive fiber assembly only — no optics, no electronics. You must add a twin-port OSFP transceiver (MMA4Z00-NS) at the switch end and a 200G OSFP (MMA4Z00-NS400) or QSFP112 (MMA1Z00-NS400) transceiver at each adapter end.
Q5. Where is a 50m splitter typically deployed?
Spine-to-leaf links in AI/HPC fabrics, inter-row structured cabling, EoR/MoR aggregation to ToR, and pod-to-pod optical runs over patch panels. 50m is too long for intra-rack — short intra-rack workloads use DAC/AOC at 1–3m.
Q6. Is this cable suitable for AI training workloads?
Yes — at 200Gb/s per host, NDR200 is a standard east-west GPU-interconnect speed for Quantum-2 InfiniBand AI clusters and 200GbE Spectrum-4 AI Ethernet fabrics. The splitter design targets dense GPU compute nodes where two hosts share one switch port.
Q7. Why MMF (aqua) rather than SMF?
The MFP7E20-N050 pairs with NVIDIA MMA4Z00-NS series transceivers, which use 850nm VCSEL transmitters tuned for short-reach (up to 50m) data-centre runs. Longer reach (100m+) requires SMF cabling (MFP7E10-Nxxx, yellow jacket) and SMF FR-class transceivers.
Q8. What condition is supplied by T.E.S IT-SOLUTIONS?
Refurbished. Each cable is inspected on all three connector end-faces with a fiber-scope, dust caps are replaced, vendor markings and tail labels verified, and the unit is packed in protective anti-static packaging from EU stock.
Why buy from T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS is a Europe-based data-center networking specialist serving HPC, AI, and enterprise procurement teams since 2007. Every NVIDIA LinkX assembly is identified by MPN, NVIDIA P/N, connector polish and family before it ships. Free pre-sale compatibility advice for twin-port OSFP / splitter topology, EU stock with worldwide express B2B logistics, multi-currency invoicing, and direct contact with the engineering desk rather than a call-centre.