MikroTik QSFP56 Break-Out Cable 3m DQ+BC0003-DS+ for 40G/100G/200G connections

The MikroTik QSFP56 Break-Out Cable 3 m is a passive direct-attach cable designed to split a single QSFP56 port into multiple lower-rate interfaces for 40G, 100G or 200G network links. The 3‑metre length supports short-range connections within data centres and server racks, enabling flexible interconnects between compatible QSFP56 ports and lower-rate modules or ports without additional transceivers.

Advantages

This break-out cable delivers a compact, low-latency solution for port breakout and link aggregation. As a passive direct-attach assembly it requires no power or external optics, reducing cost and simplifying deployment. The fixed 3 m length balances reach and rack-friendly cabling, while the QSFP56 connector and compatible downstream interfaces support multi-rate operation for 40G, 100G and 200G use cases.

Suitable for

• Short-range connections in data centre racks and network cabinets
• Port breakout from QSFP56 ports to multiple lower-rate interfaces
• Link aggregation and uplinks between switches and routers
• Interconnects between compatible switches and transceivers for multi-rate environments

Key specifications

• Type: Passive direct-attach break-out cable
• Length: 3 metres
• Connector: QSFP56 on the upstream side with multiple lower-rate terminations on the downstream side
• Supported data rates: Compatible with 40G, 100G and 200G multi-rate configurations
• Application: Short-reach, within-rack and adjacent-rack interconnects

How to use

Insert the QSFP56 end into a compatible QSFP56 port on a switch or transceiver module, and connect the downstream terminations to the corresponding lower-rate ports on the target device. Ensure both devices support the intended breakout mode and multi-rate operation before enabling link aggregation or configuring interfaces. Route the cable within the rack to avoid sharp bends and maintain proper airflow around equipment.

Usage recommendations

Verify compatibility of both ends for breakout operation and confirm firmware or configuration settings on connected devices. Use the 3 m length for within-rack or adjacent-rack connections, and avoid exposure to excessive pulling force or tight bend radii to preserve signal integrity.