ST-DAC-400G-OSFP-2.5

400G OSFP DAC — 2.5m, Built for Rack-to-Rack Links

The Sate Optics ST-DAC-400G-OSFP-2.5 is a 400G direct attach copper cable, factory-terminated with OSFP to OSFP connectors and cut to 2.5m (8ft) — sized for links between neighbouring racks.

Why This Module

• Lowest-cost way to link two ports: no transceivers, no fiber — one cable, and a passive DAC draws essentially no power
• 2.5m rack-to-rack reach: crosses to the neighbouring cabinet with room for overhead or underfloor routing
• Factory-terminated and plug-and-play: both ends arrive as one tested assembly — plug in, link up, with lower latency than an optical hop

• Compatible with your platform — coded for major networking platforms, including Cisco, Juniper, Arista, Huawei, Nokia, H3C and ZTE; 100% tested before shipment.

Key Specifications

Used In

• 400G spine switching and AI fabric pods
• GPU cluster and HPC interconnects on OSFP ports
• Rack-to-rack links between neighbouring cabinets
• Typical platforms: Cisco Nexus 9300 series, Arista 7060X / 7388 series, Juniper QFX5220 / QFX5700, Huawei CloudEngine 16800, Nokia 7250 IXR, H3C S12500 / S9820 series.

Not sure it fits your equipment? Request a Quote and tell us your switch model — we confirm compatibility before you order.

Where It Fits

• Rack-to-rack uplinks between neighbouring cabinets in the same row
• Middle-of-row aggregation over short copper runs
• Replacing transceiver pairs where the run is short enough for copper — lower cost, lower power, nothing to clean or pair

Every module is covered by a 3-year warranty with lifetime maintenance. Standard lead time is 3–7 days for most products, and samples are available for evaluation.