Save significantly on the NVIDIA Mellanox MMA1B00-C100D — a genuine OEM 100GBASE-SR4 QSFP28 optical transceiver, fully tested and backed by Reef Telecom's industry-leading 10-year warranty. This end-of-life optic is increasingly hard to source new, making certified refurbished the smart choice for data center and AI cluster deployments.

Technical Specifications

• Part Number: MMA1B00-C100D
• Form Factor: QSFP28
• Data Rate: 100Gb/s (4x 25Gb/s lanes)
• Wavelength: 850nm VCSEL
• Connector: MPO-12 / MTP
• Fiber Type: Multimode (MMF) — OM3 / OM4
• Max Reach: 70m (OM3) / 100m (OM4)
• Standards: IEEE 802.3bm, 100GBASE-SR4, QSFP28 MSA, SFF-8636, CAUI-4
• Diagnostics: Digital Diagnostic Monitoring (DDM/DOM) via I2C
• Power Consumption: ≤2.5W
• Operating Temp: 0°C to 70°C
• Breakout Support: 4x 25GBASE-SR via MPO-to-LC harness

Key Features

• Genuine NVIDIA/Mellanox OEM transceiver — not a third-party compatible
• Hot-pluggable with selectable retiming in TX and RX directions
• Certified for NVIDIA ConnectX adapters, Spectrum switches, and DGX/HGX platforms
• Supports GPUDirect RDMA for high-performance AI and HPC workloads
• Backward compatible with 40GbE QSFP+ ports

Why Buy from Reef Telecom?

• 10-year warranty on all refurbished equipment
• Free shipping on orders over $300
• Every transceiver tested and verified before shipment
• Volume pricing available — contact us for quotes

Ideal for data center leaf-spine architectures, AI training clusters, HPC interconnects, and enterprise 100G Ethernet upgrades. Compatible with NVIDIA Spectrum, Spectrum-2, and Spectrum-3 series switches as well as ConnectX-4, ConnectX-5, and ConnectX-6 network adapters.

Free ground shipping on orders over $300. Same-day shipping on orders placed before 4PM EST.

All products include our industry-leading 10 Year Warranty backed by Reef Telecom.