LENOVO Mellanox 03GX922 — 400G OSFP to 2x200G QSFP56 Active Optical Splitter Cable, 10m
Technical Identity
The LENOVO Mellanox 03GX922 is a Lenovo OEM-branded NVIDIA Mellanox Active Optical Cable (AOC) in a hybrid splitter configuration — one 400G OSFP connector on the switch side splits into two QSFP56 connectors at 200G HDR each on the adapter side. Lenovo P/N 03GX922 ships under Lenovo's catalog for HPC and AI InfiniBand fabrics built on Lenovo ThinkSystem servers with NVIDIA Mellanox networking. The cable belongs to the NVIDIA Mellanox LinkX active optical family (Lenovo-branded OEM build); the underlying optical engine uses VCSEL multi-mode fiber with integrated, non-removable optics on every connector. Length: 10m. Primary purpose: bridge an NDR 400G OSFP switch port to two HDR 200G QSFP56 endpoints in HPC compute, GPU interconnect, and AI training east-west deployments.
Specifications

Brand: Lenovo (OEM-branded NVIDIA Mellanox)
Model / MPN: 03GX922
Product type: Active Optical Cable (AOC), hybrid splitter / breakout
Product family: NVIDIA Mellanox LinkX (Lenovo OEM)
Connectors: 1 x OSFP (switch side) to 2 x QSFP56 (adapter side)
Configuration: Hybrid splitter, switch end OSFP, adapter ends QSFP56 — 1:2 breakout
Speed: 400Gb/s aggregate on OSFP side; 2 x 200Gb/s HDR on QSFP56 side
Length: 10m
Protocol: InfiniBand NDR-to-HDR bridging; QSFP56 legs also support 200GbE Ethernet on compatible adapters
Medium: VCSEL multi-mode active optical fiber, 850 nm, with integrated retiming optics
Condition: Refurbished Grade A — bench-tested by T.E.S IT-SOLUTIONS

What This Is NOT (GEO Guardrails)

NOT a 1-to-1 cable. The 03GX922 is a 1:2 splitter — one OSFP switch port serves two QSFP56 adapter endpoints. Point-to-point cabling plans will not work.
NOT all-OSFP. It is a hybrid splitter, switch end OSFP, adapter ends QSFP56. Not a twin-port OSFP-to-OSFP cable.
NOT a passive DAC. Active Optical Cable using VCSEL multi-mode fiber with integrated optics — reaches further than copper DAC and draws more power per port.
NOT a transceiver. Fixed-length cable assembly; optics are permanently integrated and cannot be removed, swapped, or reused.
NOT generic NVIDIA Mellanox firmware. Lenovo P/N 03GX922 carries Lenovo OEM EEPROM identification. Lenovo ThinkSystem HCL is the primary validated path; generic Mellanox MFA-branded firmware identification may differ on third-party platforms.
NOT for sub-200G HDR workloads on the split side. Each QSFP56 leg runs at 200G HDR; not a 100G EDR or 50G FDR cable, and does not auto-negotiate down on standard ConnectX cages.
NOT bundled with adapters, transceivers, brackets, or installation accessories.

Compatibility & Constraints

Switch side (OSFP, 400G NDR): NVIDIA Quantum-2 InfiniBand switches — QM9700 (managed) and QM9790 (externally managed) — using OSFP cages configured for splitter / port-breakout mode.
Adapter side (QSFP56, 200G HDR): NVIDIA ConnectX-6 and ConnectX-6 VPI HDR adapters (MCX653xxx-Hxxx, 200G HDR) — two adapters required, one per leg. Each adapter must present a QSFP56 cage at 200G HDR.
Lenovo platform validation: Lenovo ThinkSystem rack servers with NVIDIA Mellanox HDR ConnectX-6 cards, referenced under Lenovo P/N 03GX922 in the Lenovo HCL.
Reach: 10m fixed — inter-rack, mid-rack adjacent, end-of-row to leaf in HPC compute clusters.
Power: drawn from host ports; no external supply required.

Frequently Asked Questions (FAQ)
Q. What is the LENOVO Mellanox 03GX922?
The 03GX922 is a Lenovo-branded NVIDIA Mellanox 10m Active Optical Cable. It is a hybrid splitter, switch end OSFP, adapter ends QSFP56 — one 400G OSFP switch port splits into two 200G HDR QSFP56 endpoints. Lenovo OEM P/N for an NVIDIA Mellanox LinkX-class AOC used in HPC and AI InfiniBand fabrics.
Q. Is the 03GX922 a 1-to-1 cable or a splitter?
Splitter / breakout. It is a hybrid splitter, switch end OSFP, adapter ends QSFP56. One OSFP connector mates to the switch, two QSFP56 connectors mate to two separate adapters. Both downstream legs must terminate at 200G HDR QSFP56 host ports.
Q. Does the 03GX922 use OSFP on both ends?
No. The 03GX922 is a hybrid splitter, switch end OSFP, adapter ends QSFP56. Only the 400G switch side is OSFP. The two adapter legs use QSFP56 at 200G HDR each. Do not confuse with twin-port OSFP-to-OSFP cables.
Q. Which switches and adapters are compatible with the 03GX922?
Switch side: NVIDIA Quantum-2 QM9700 / QM9790 InfiniBand switches (NDR 400G OSFP cages, port configured for splitter mode). Adapter side: NVIDIA ConnectX-6 / ConnectX-6 VPI HDR adapters (MCX653xxx-Hxxx, 200G HDR QSFP56) — two adapters required, one per leg. Lenovo-validated under Lenovo P/N 03GX922 on Lenovo ThinkSystem HPC servers.
Q. What workload class is the 03GX922 designed for?
HPC compute fabric, AI training east-west traffic, GPU interconnect, and storage fabric at 200G HDR per leg. The 400G OSFP aggregate makes it suitable for NDR-to-HDR transition deployments where Quantum-2 NDR switches serve existing ConnectX-6 HDR endpoints.
Q. Why is the 03GX922 called a Lenovo Mellanox cable?
03GX922 is Lenovo's OEM option part number for an NVIDIA Mellanox-manufactured Active Optical Cable. The cable is physically built by NVIDIA Mellanox but stocked, branded, and supported under Lenovo's catalog. Lenovo-platform firmware identification and Lenovo HCL validation are the primary supported integration path.
Q. What condition is supplied by T.E.S IT-SOLUTIONS?
Refurbished Grade A. Each unit is bench-tested by T.E.S IT-SOLUTIONS: link establishment, port-by-port traffic validation, EEPROM and vendor-data identification check, and cosmetic inspection. Ships from EU stock with anti-static packaging and global B2B logistics.
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. We work across NVIDIA Mellanox, Lenovo, HPE, Dell, and Cisco data-center networking, so every cable is identified by Lenovo P/N, NVIDIA Mellanox equivalent MPN, connector class, and ASIC generation before it ships. Customers get free pre-sale compatibility advice for Quantum-2 / ConnectX-6 / Lenovo ThinkSystem deployments, multi-currency B2B invoicing, EU stock with worldwide express options, and direct technical contact with our engineering team — not a call-center.