BlueLAN 0.5m 400G OSFP to OSFP Passive Direct Attach Copper Twinaxial Cable, Arista Compatible

In dense data centers, connecting 400G OSFP ports across adjacent racks often requires a reliable, low-latency link without the cost and power draw of optical transceivers. This BlueLAN direct attach cable provides a passive twinaxial copper solution, engineered for Arista CAB-O-O-400G-0.5M compatibility, delivering 400 Gigabit Ethernet over a short 0.5-meter reach.

Who is it for

Network engineers and data center operators deploying Arista switches and routers with OSFP interfaces who need a cost-effective, low-power interconnect for top-of-rack to adjacent rack or intra-rack cabling. Ideal for high-density 400G fabrics where latency and power efficiency are critical.

Main features

• 400G OSFP to OSFP passive direct attach copper twinaxial cable
• 0.5 meter length for short-reach rack and adjacent rack connections
• Compatible with Arista CAB-O-O-400G-0.5M
• Passive design consumes minimal power and adds near-zero latency
• Hot-pluggable OSFP connectors for easy installation and maintenance
• Supports 400GBASE Ethernet with 100 Ohm impedance

Specifications

• Connector A: OSFP
• Connector B: OSFP
• Cable length: 0.5 m
• Data rate: 400 Gbit/s
• Cable type: Passive twinaxial copper
• Impedance: 100 Ω
• Operating temperature: 0°C to 70°C
• Storage temperature: -40°C to 85°C

Tips

Use this DAC for short links within a rack or between adjacent racks to save cost and power compared to optical modules. Ensure both ends are OSFP ports and that your equipment supports passive copper cables at 400G.