BlueOptics compatible BlueLAN DAC QSFP56 BL070701W3M30 passive direct-attach cable 3m

BlueOptics compatible BlueLAN DAC QSFP56 BL070701W3M30 passive direct-attach cable 3m is a 3‑meter passive copper direct-attach cable designed for short‑range high‑speed interconnects. It uses QSFP56 connectors on both ends to provide a compact, low‑latency physical link between QSFP56 ports in switches, routers and servers. The cable offers plug‑and‑play installation and is intended for environments where a cost‑effective, low‑power connection is required for 200Gb/s class interfaces over short distances.

Advantages

This passive direct‑attach cable minimizes power consumption compared with active optical modules and eliminates the need for separate transceivers. Its QSFP56 interfaces provide high-density connectivity for top‑of‑rack and aggregation switches while maintaining low latency and predictable performance. The 3 m length balances flexibility and signal integrity for short copper runs, and the cable’s passive design reduces heat generation and operational complexity.

Suitable for

• Short‑reach connections in data center racks between QSFP56 ports
• Interconnects between switches, routers and server NICs supporting QSFP56
• High‑density patching in aggregation and spine/leaf network architectures
• Environments prioritizing low latency and reduced power usage

Key specifications

• Connector type: QSFP56 to QSFP56
• Design: Passive direct‑attach copper cable
• Nominal data rate: suitable for 200Gb/s class links (QSFP56 interfaces)
• Length: 3 meters
• Typical use: short‑range, high‑speed server and switch interconnects
• Latency: low, hardware‑level electrical connection

How to use

Insert each QSFP56 connector firmly into the corresponding QSFP56 port on the network devices until the latch engages. Ensure ports support passive direct‑attach copper connections and that link settings on devices are configured for the intended speed and lane mapping. No additional transceiver configuration or fiber cabling is required; the cable establishes the electrical interface once connected. For best results, route the cable to avoid tight bends and mechanical strain on the connectors.

Usage recommendations

Verify compatibility with the target devices' QSFP56 ports before deployment and confirm device firmware or OS support for passive DACs. Avoid running the cable near strong electromagnetic sources and maintain minimum bend radii as specified by the manufacturer to preserve signal integrity and connector longevity.