Direct Attach Breakout Cable BlueOptics 720-095806 2m QSFP-DD 400GBASE-CR4 to 4×QSFP56 100GBASE-CR AWG26

BlueOptics 720-095806 direct attach breakout cable is a 2 m AWG26 passive copper link that splits a single QSFP-DD 400GBASE-CR4 interface into four QSFP56 100GBASE-CR connections. The cable is intended for short-reach data center interconnects and aggregation scenarios where a 400G port needs to be distributed to multiple 100G ports without adding active transceivers. Its construction supports high-density cabling and simplifies cabling between switches, panels and servers.

Advantages

This breakout cable enables direct passive copper connectivity from a 400G QSFP-DD port to four 100G QSFP56 ports, eliminating the need for separate transceivers and reducing component count. The 2 m length and AWG26 wiring provide low-latency, low-power connectivity for short distances within racks or between adjacent racks. The single-cable breakout design streamlines rack layout and port management in high-density environments.

Suitable for

• Short-reach connections inside data center racks
• Switch-to-switch or switch-to-server aggregation
• High-density 400G to 4×100G port breakout
• Patch panels and top-of-rack consolidation

Key specifications

• Cable type: passive direct attach breakout copper
• Length: 2 meters
• Conductor: AWG26
• Connector A: QSFP-DD 400GBASE-CR4
• Connector B: 4 × QSFP56 100GBASE-CR
• Reach: short-reach data center connections (within racks or adjacent racks)
• Power: passive (no external power required)

How to use

Insert the QSFP-DD end into the host 400G port and connect the four QSFP56 ends to the target 100G ports on switches, servers or patch panels. Ensure both ends are fully seated and latched according to the equipment vendor instructions. Verify link status through the network devices' management interface and confirm port speeds and lane mapping are configured for 400G-to-4×100G breakout operation. No additional transceivers or external power supplies are required for standard passive operation.

Usage recommendations

Use this AWG26 2 m breakout cable for short, rack-level connections where passive, low-latency aggregation is needed. Avoid using this cable for longer runs or outside the specified short-reach environment; inspect connectors for debris before insertion and follow equipment vendor compatibility lists when available.