NVIDIA Mellanox MFS1S50-H003V 200Gb/s to 2x100Gb/s QSFP56 Active Optical Splitter Cable, 3m: This is a 3-meter active optical cable (AOC) that splits a single 200Gb/s QSFP56 port into two 100Gb/s (HDR100) QSFP56 endpoints. The cable uses VCSEL optics over multi-mode fiber for signal transmission. This is a fixed-length integrated assembly, not a transceiver with a detachable patch cord. This is a refurbished unit.
Engineering Context
The MFS1S50-H003V doubles the usable port count of a Quantum HDR switch by splitting each 200G port into two HDR100 connections. At 3 meters, this is the shortest standard AOC splitter length, suited for intra-rack and adjacent-rack deployments. Compared to copper DAC splitters, the AOC variant provides complete EMI immunity and lower cable weight, improving airflow in high-density configurations. Each QSFP56 connector includes an integrated EEPROM for SFF-8636 compliant diagnostic monitoring.
Deployment & Use Cases
Connecting Quantum HDR switch ports to ConnectX-6 HDR100 adapters within the same rack or adjacent racks. Doubling switch port density by splitting 200G QSFP56 ports into two HDR100 endpoints. Top-of-Rack configurations where optical cable weight and EMI immunity outweigh the cost advantage of copper. AI/ML training clusters requiring short-reach 200G/100G connectivity.
Technical Specifications
- OEM: NVIDIA Mellanox
- Part Number: MFS1S50-H003V
- Form Factor: QSFP56 to 2x QSFP56 (Splitter)
- Data Rate: 200Gb/s to 2x 100Gb/s (HDR to 2x HDR100)
- Cable Type: Active Optical Cable (AOC) Splitter
- Length: 3m
- Protocol: InfiniBand HDR / 200GbE
- Power: <5W (source) / <3.5W (endpoints)
- Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
QSFP56 ports required on all three connectors. Not compatible with QSFP28, QSFP-DD, or OSFP ports. Requires 50G PAM4 lane capability — not compatible with legacy EDR (NRZ) or 40G QSFP+ ports. Fixed 3m length, cannot be shortened or extended. This is a 2-way splitter only; not compatible with 4-way 4x50G splitting configurations.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS tests every AOC splitter for optical power output, lane integrity, and connector condition before shipment. We provide expert consultation on InfiniBand fabric cabling, global shipping, and comprehensive warranty.

