BlueLAN Compatible Juniper 720-128729 Passive 400GBASE-CR8 QSFP-DD to 2x200GBASE-CR4 QSFP56 Direct Attach Breakout Cable, 2m, AWG26

The BlueLAN 720-128729-BL is a high-performance passive direct attach breakout cable (DAC) designed for compatibility with Juniper networking equipment. It provides a cost-effective and reliable solution for high-speed data center interconnects, enabling seamless migration to 400G infrastructure.

Advantages

This breakout cable offers a simple plug-and-play installation without the need for external power or transceivers. Its passive design ensures ultra-low power consumption (<0.1W) and minimal latency, making it ideal for energy-efficient data centers. The 2-meter length with 26 AWG construction provides flexibility for rack-to-rack connections while maintaining signal integrity.

Suitable for

• High-speed data center interconnects
• Network switches, servers, and storage systems
• Juniper compatible 400G to 2x200G breakout applications
• QSFP-DD ports requiring 400GBASE-CR8 to 2x200GBASE-CR4 conversion

Key specifications

• Product Type: Direct Attach Breakout Cable (DAC)
• Cable Type: Passive Copper
• Aggregate Data Rate: 400 Gbps
• Connector A: QSFP-DD
• Connector B: 2x QSFP56
• Standard (End A): 400GBASE-CR8
• Standard (End B): 2x 200GBASE-CR4
• Cable Length: 2 meters
• Wire Gauge: 26 AWG
• Compatibility: Juniper (OEM P/N 720-128729 compatible)
• Form Factor: QSFP-DD to 2x QSFP56
• Electrical Interface: CR8 (8-lane) to CR4 (4-lane)
• Hot-Pluggable: Yes
• Power Consumption: < 0.1W (typical)
• Impedance: 100 Ohm
• Operating Temperature: 0°C to 70°C
• Compliance: RoHS, CE, FCC
• Jacket Color: Black

Recommendations

For optimal performance, ensure that both ends of the cable are connected to compatible QSFP-DD and QSFP56 ports. This cable is an ideal choice for network upgrades requiring high-density 400G breakout connectivity.