Reef Optics 400G QSFP-DD LR4 Optical Transceiver — NVIDIA Mellanox MMS1V90-WR Compatible

Deliver reliable 400 Gigabit Ethernet connectivity over single-mode fiber with this Reef Optics QSFP-DD LR4 transceiver. Designed as a cost-effective, 100% compatible alternative to the NVIDIA Mellanox MMS1V90-WR, this module is ideal for data center interconnects, high-performance computing (HPC) networks, and enterprise backbone links up to 10km.

Key Specifications

• Data Rate: 400Gbps (4x100G PAM4 CWDM4 lanes)
• Form Factor: QSFP-DD (Quad Small Form-Factor Pluggable Double Density)
• Wavelength: 1271/1291/1311/1331nm CWDM grid
• Max Distance: 10km over single-mode fiber (SMF)
• Connector: Duplex LC/UPC
• Standards: IEEE 802.3bs, QSFP-DD MSA, 100G Lambda MSA, OIF 56G PAM4
• Digital Diagnostics: DOM/DDM monitoring supported
• Power Consumption: <10W (compatible with standard switch port power budgets)
• Operating Temp: 0°C to 70°C (Commercial)

Why Buy from Reef Telecom?

• 🛡️ Industry-Leading 10-Year Warranty — the longest in the business
• 🚚 Free Shipping on orders over $300
• ✅ 100% tested for compatibility with NVIDIA Mellanox, Cisco, Arista, Juniper, and other major OEM platforms
• 📦 Same-day shipping on in-stock items

This 400GBASE-LR4 QSFP-DD module is a drop-in replacement for the NVIDIA Mellanox MMS1V90-WR and works seamlessly in any MSA-compliant QSFP-DD slot. Perfect for 400GbE spine-leaf architectures, data center interconnects (DCI), and enterprise WAN links requiring up to 10km reach over duplex SMF.

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.