For short reach 400Gbps links in InfiniBand HDR fabrics, HPC clusters and AI computing networks, the NVIDIA InfiniBand Compatible 400G OSFP Passive DAC Flat Top offers a factory terminated passive twinax assembly with OSFP (RHS/Flat Top) to OSFP (RHS/Flat Top) connectors and a length of 0.5m (2ft). As a passive cable it draws essentially no power and adds no latency to the link. The cable meets OSFP MSA, CMIS Rev4.0, IEEE 802.3cd.

Product Highlights

• OSFP (RHS/Flat Top) to OSFP (RHS/Flat Top)
• Data rate: 400Gbps
• Cable type: Passive Twinax
• Length: 4 standard options from 0.5m (2ft) to 2m (7ft)

The NVIDIA InfiniBand Compatible 400G OSFP Passive DAC Flat Top is a 400Gbps direct attach copper cable for OSFP (RHS/Flat Top) to OSFP (RHS/Flat Top) connections in InfiniBand HDR fabrics, HPC clusters and AI computing networks. This unit is available in 4 standard lengths from 0.5m (2ft) to 2m (7ft). Because the assembly is factory terminated and tested as a complete link, installation is plug and play on both ends. Our factory programs the compatibility coding for your switch brand before shipment and verifies each unit on real host equipment. The link runs 4x 100G-PAM4 modulation, which keeps it aligned with current 400G switch silicon.

This product is designed and tested to comply with OSFP MSA, CMIS Rev4.0, IEEE 802.3cd. It plugs into any standards-based OSFP (RHS/Flat Top) to OSFP (RHS/Flat Top) port, and compatibility coding for specific switch or router brands can be done in our factory before shipment.

The standard part number of this assembly is OSFPFL-400G-PC. We supply this cable in 0.5m (2ft), 1m (3ft), 1.5m (5ft) and 2m (7ft). Custom lengths beyond this range can also be produced on request. Wire gauge: 30AWG.

Standard products are held in stock and usually ship within one to three working days. We dispatch worldwide by DHL, UPS, FedEx, TNT or EMS, and for bulk orders we arrange air or sea freight. Shipments can also be sent collect on your own courier account or delivered to your freight forwarder.

From incoming component inspection to final burn-in, quality is controlled at each step of production. Finished units are verified on real networking equipment in our compatibility lab, and test records are kept per batch so that any field question can be traced back quickly.

Transceivers and cables are individually protected against static and dust, then consolidated into sturdy cartons suitable for international courier shipment. For larger orders we shrink-wrap and strap cartons onto pallets. Tell us your warehouse or retail requirements and we will pack accordingly.

Because we are the factory, customization is straightforward: non-standard lengths, different jacket materials, specific polarity or breakout wiring, and compatibility programming for particular switch brands are all routine work for us. Small trial orders are accepted so you can verify quality before scaling up.