Direct Attach Cable BlueOptics QSFP 40GBASE-CR4 1 m (BlueLAN 10312)

BlueOptics BlueLAN 10312 is a 1 meter QSFP direct attach copper (DAC) cable engineered for 40GBASE-CR4 links. This passive DAC assembly connects QSFP ports on switches, routers and servers to provide a fixed short-reach interconnect with low latency and stable electrical performance. The single-cable solution eliminates the need for transceivers and fibers in short-distance rack and cabinet connections, simplifying installation and reducing per-port cost in data center topologies.

Advantages

The BlueLAN 10312 offers predictable latency and low power consumption compared with active optical alternatives. Its fixed-length copper construction ensures consistent signal integrity for 40 Gigabit Ethernet over a 1 m reach, while the QSFP form factor maintains broad compatibility with QSFP ports that accept passive DACs. The cable is a cost-effective option for dense rack-to-rack or chassis-to-chassis connections where range requirements are within the supported short-reach distance.

Suitable for

• 40 Gigabit Ethernet interconnects between QSFP-equipped switches
• Server-to-switch connections in data center racks
• High-density patching inside network cabinets and top-of-rack deployments
• Short-reach links where low latency and low power are prioritized

Key specifications

• Interface: QSFP to QSFP (direct attach copper)
• Data rate: 40 Gbps (40GBASE-CR4)
• Length: 1 meter
• Cable type: Passive copper assembly
• Typical use: Short-reach rack/cabinet interconnects

How to use

Install the BlueOptics QSFP 40GBASE-CR4 DAC by inserting each QSFP connector into the corresponding QSFP port on your network devices, ensuring connectors are fully seated and latches engage. No additional configuration is required on the cable itself; verify that the host devices support passive QSFP DACs and 40GBASE-CR4 operation. Route the cable to avoid sharp bends and excessive strain, and secure it in the rack to maintain cable management and airflow.

Usage recommendations

Use this passive DAC for short, high-density connections within racks or between adjacent racks. Confirm device compatibility with QSFP passive copper assemblies and follow manufacturer guidelines for operating temperature and bend radius to preserve performance and reliability.