NVIDIA Spectrum-4 SN5400 400GbE Switch, 64x QSFP-DD

• Brand: NVIDIA
• Product Family: Spectrum-4
• Switch Model: SN5400
• SKU / Ordering Part Number: 920-9N42C-00RB-5N0
• Product Type: 400GbE Ethernet Switch
• Chassis: 2U
• Primary Role: Spine / Super-Spine Ethernet Switch
• Main Data Ports: 64 × QSFP-DD
• Main Port Supported Speeds: 10/25/50/100/200/400GbE
• Auxiliary Ports: 2 × SFP28
• SFP28 Speeds: 1/10/25GbE
• Maximum Throughput: 25.6Tb/s
• Maximum Packet Rate: 33.3Bpps
• Signaling: 50G PAM4
• Breakout Support: Up to 128 × 200GbE / 256 × 100GbE and lower configurations
• QSFP-DD Port Power Support: Up to 12W per port
• Power Supply: 2 × AC PSU
• AC Input: 200–264VAC; 220–240VAC rated
• Operating Temperature: 0°C to 40°C
• Non-Operating Temperature: -40°C to 70°C
• Operating Humidity: 10–85% non-condensing
• Non-Operating Humidity: 10–90% non-condensing
• Maximum Operating Altitude: 3050m
• Dimensions: 88 × 438 × 720mm; 745mm with fan levers
• Rack Mounting: 19-inch rack
• Management Interfaces: Front USB-A, RJ45 management, RJ45 console
• Fans: 4
• Regulatory: CB, cTUVus, CE, CU, S_Mark, FCC, VCCI, ICES, RCM, BSMI, KCC, CCC
• RoHS: Compliant
• Compatibility: NVIDIA Spectrum-4 / supported Ethernet ecosystem

Why Choose This Product?

• 64-port 400GbE density — Provides 64 high-speed QSFP-DD interfaces in a 2U chassis, reducing the rack footprint required for large-scale 400GbE deployments.
• 25.6Tb/s switching capacity — Gives network architects substantial aggregate capacity for AI, cloud, HPC and high-volume east-west traffic. 
• Flexible speed migration — The same QSFP-DD interfaces can support multiple Ethernet rates, allowing organizations to connect mixed-speed infrastructure during phased upgrades. 
• Built for 400GbE Ethernet — NVIDIA specifically positions SN5400 as a 400GbE spine/super-spine platform, making it a strong fit for high-capacity data-center fabrics. Compact 2U footprint — High port density within two rack units can help reduce rack consumption compared with deploying multiple lower-density switches.
• Optics and cable flexibility — NVIDIA's 400GbE ecosystem includes DAC, AOC and multiple optical transceiver options for SN5400, giving deployment teams choices based on reach and rack topology. 
• Redundant power architecture — Two AC PSUs provide a redundant power configuration suitable for enterprise data-center deployments. 
• Strong upgrade path within Ethernet infrastructure — The ability to operate QSFP-DD ports at multiple speeds can help protect the network investment as connected infrastructure evolves.