NVIDIA Mellanox MFS4R12CB-030 40Gb/s QDR/FDR10 QSFP+ Active Optical Cable, 30m: This is a 30-meter active optical cable (AOC) supporting InfiniBand QDR and FDR10 at 40Gb/s and 40GbE Ethernet over QSFP+ to QSFP+ multi-mode fiber. Active optics inside each QSFP+ housing convert electrical signals to 850nm light. This is a fixed-length factory-terminated assembly, not a transceiver with a detachable patch cord. This is a refurbished unit.
Engineering Context
The MFS4R12CB-030 is engineered for medium-reach 40Gb/s fabric connections where passive copper DAC is not viable (passive copper at 40Gb/s is generally limited to 5m). The QSFP+ form factor uses 4 lanes of 10Gb/s NRZ for QDR/FDR10/40GbE. Active optics over multi-mode fiber give EMI immunity and reduced cable bulk versus copper alternatives at this length. The cable is widely deployed in legacy and mixed-generation HPC InfiniBand fabrics where QDR or FDR10 hosts and switches remain in service.
Deployment & Use Cases
Mid-row and cross-row 40Gb/s InfiniBand QDR or FDR10 connections in legacy HPC clusters. 40GbE Ethernet uplinks where copper reach is insufficient. Bridging 40Gb/s islands in mixed-generation fabrics where QSFP+ remains the active port type. Educational and research clusters with established QDR-class infrastructure.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MFS4R12CB-030
Form Factor: QSFP+ to QSFP+ (Point-to-Point)
Data Rate: InfiniBand QDR/FDR10 40Gb/s / 40GbE Ethernet
Cable Type: Active Optical Cable (AOC)
Length: 30m
Protocol: InfiniBand QDR, FDR10, 40GbE
Lane Configuration: 4x 10Gb/s NRZ
Wavelength: 850nm (multi-mode)
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
Compatible with Mellanox QDR/FDR10 InfiniBand switches and ConnectX-2, ConnectX-3 adapters running QDR, FDR10, or 40GbE. Both ends require QSFP+ ports configured for one of these supported protocols. Not rated for FDR 56Gb/s, EDR 100Gb/s, or HDR 200Gb/s — link will not negotiate above 40Gb/s. Not compatible with QSFP28 ports unless the platform negotiates down to QSFP+ rates. Fixed 30m length.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS tests every AOC for optical lane integrity and connector condition before shipment. Visit tes-itsolutions.com for catalog access. Handling time 1–3 business days, global shipping, and expert consultation on legacy QDR/FDR10 fabric maintenance.
Frequently Asked Questions
What data rate does the MFS4R12CB-030 have?
The MFS4R12CB-030 data rate is InfiniBand QDR/FDR10 40Gb/s / 40GbE Ethernet, as listed in the specifications for MFS4R12CB-030.
What is the MFS4R12CB-030 NOT compatible with?
This is a fixed-length factory-terminated assembly, not a transceiver with a detachable patch cord. Confirm fitment against your platform before ordering MFS4R12CB-030.
What condition is the MFS4R12CB-030 supplied in, and who sells it?
The MFS4R12CB-030 is supplied in Refurbished condition by T.E.S IT-SOLUTIONS from EU stock, with 1-3 business day handling and worldwide B2B shipping. See https://www.tes-itsolutions.com/product-page/mellanox-mfs4r12cb-030-qsfp-fiber-cable-infiniband-qdr-fdr10-30-m-support.