How is the 400G OSFP signal mapped to two 200G QSFP56 ends on the MFA7U10-H005?

The MFA7U10-H005 takes 8x 50Gb/s PAM4 lanes from a twin-port OSFP interface and splits them into two independent 4-lane HDR groups, terminating in two QSFP56 connectors at 200Gb/s each.

Can the MFA7U10-H005 be used in Ethernet ports?

No. This part is coded for InfiniBand HDR split operation. Using it in Ethernet-only platforms can result in EEPROM mismatch or link negotiation failures. For Ethernet splitters, contact T.E.S for the correct part number.

What is the condition and how is the MFA7U10-H005 tested at T.E.S?

This is a refurbished unit. T.E.S IT-SOLUTIONS validates both QSFP56 legs for optical power, lane integrity, and connector condition before shipment. Details at https://www.tes-itsolutions.com.

NVIDIA Mellanox MFA7U10-H005 InfiniBand 400G OSFP to 2x 200G QSFP56 Active Optical Splitter, 5m: This is a 5-meter active optical splitter cable that converts a single 400Gb/s twin-port OSFP InfiniBand interface into two 200Gb/s QSFP56 endpoints. The integrated optics re-time and electrically isolate each lane group. This is a fixed-length integrated assembly, not a transceiver with a detachable patch cord. This is a refurbished unit.

Engineering Context

The MFA7U10-H005 carries 8x 50Gb/s PAM4 lanes on the OSFP side, mapped as two 4-lane HDR groups (2x 200Gb/s) on the QSFP56 side. It enables a single twin-port OSFP switch port on Quantum-2 platforms to drive two independent HDR endpoints, doubling logical port density. The OSFP form factor includes an integrated finned heat sink for active power dissipation up to ~10W; ensure the host switch maintains MSA-compliant airflow. Active optics provide complete EMI immunity and tighter bend radius than equivalent copper splitters.

Deployment & Use Cases

Connecting NVIDIA Quantum-2 (NDR) switch OSFP ports configured in 2x HDR split mode to ConnectX-6 / ConnectX-6 Dx VPI HCAs. Doubling effective port count of OSFP-based InfiniBand spine or leaf switches when feeding HDR compute nodes. Mixed-generation AI/ML training fabrics that bridge a Quantum-2 backbone to existing HDR Quantum (QM87xx) edge.

Technical Specifications

OEM: NVIDIA Mellanox
Part Number: MFA7U10-H005
NVIDIA P/N: 980-9I11Z-00H005
Form Factor: OSFP to 2x QSFP56 (Splitter)
Data Rate: 400Gb/s split to 2x 200Gb/s InfiniBand HDR
Lane Mapping: 8x 50Gb/s PAM4 (OSFP) to 2x 4x 50Gb/s PAM4 (QSFP56)
Cable Type: Active Optical Cable (AOC)
Length: 5m
Jacket: LSZH
Protocol: InfiniBand HDR (split from twin-port OSFP)
Power: OSFP < 10W; QSFP56 < 5W per end
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS

Compatibility & Hard Constraints

Compatible with NVIDIA Quantum-2 (NDR) switches with OSFP ports configured for 2x200G HDR split mode, NVIDIA Quantum HDR (QM87xx series) on the QSFP56 side, and ConnectX-6 / ConnectX-6 Dx VPI HCAs. Requires switch firmware that supports HDR split-mode signaling. Not compatible with QSFP-DD ports (OSFP is mechanically incompatible). Not validated for Ethernet-only platforms. Not interchangeable with passive copper splitters at 5m at this data rate.

Why Choose T.E.S IT-SOLUTIONS

T.E.S IT-SOLUTIONS tests every splitter AOC for both QSFP56 leg link integrity, optical power, and connector condition before shipment. We provide expert consultation on InfiniBand HDR/NDR fabric cabling, global shipping with 1–3 day handling, and comprehensive warranty. Visit tes-itsolutions.com.

NVIDIA Mellanox® MFA7U10-H005 OSFP 400G to 2x QSFP56 200G IB AOC 5m

Name: NVIDIA Mellanox® MFA7U10-H005 OSFP 400G to 2x QSFP56 200G IB AOC 5m
SKU: MFA7U10-H005_Refurbished

SKU: MFA7U10-H005_Refurbished

€700.00

Quantity