BlueOptics QSFP28 Direct Attach Cable 1 m, 100GBASE-CR4, 30AWG, for Ethernet (980-9I629-00C00B-BL)

BlueOptics QSFP28 Direct Attach Cable, 1 m, is a factory-terminated copper assembly designed for short-reach 100GBASE-CR4 Ethernet interconnects. The cable features QSFP28 terminations on both ends and a 30 AWG conductor specification to provide consistent electrical performance for 100 Gbit/s links between switches, routers or server NICs in data center and server-room environments. This 1 metre length is intended for top-of-rack, adjacent-rack or within-rack connections where a direct-attach copper option is preferred over optical transceivers.

Advantages

The direct-attach construction delivers low-latency, power-efficient connectivity without separate transceiver modules, simplifying installation and reducing component count. The 30 AWG cable gauge balances flexibility and signal integrity for short links, while QSFP28 terminations ensure compatibility with equipment that supports 100GBASE-CR4 over direct-attach copper. A one-metre length minimizes excess cable in dense rack deployments and helps maintain airflow and cable management.

Suitable for

• Short-reach 100G Ethernet links in data centres
• Interconnects between top-of-rack switches and adjacent racks
• Direct connections between servers and 100G NICs
• High-density patching where low latency and low power are required

Key specifications

• Data rate: 100 Gbit/s (100GBASE-CR4)
• Connector type: QSFP28 to QSFP28
• Cable length: 1 m
• Cable gauge: 30 AWG
• Media type: Copper direct attach
• Intended application: Short-reach Ethernet interconnects

How to use

Install the QSFP28 direct attach cable by inserting each QSFP28 connector into the corresponding QSFP28 port on the network devices until the connector latches. Ensure devices are powered down or that hot-plug insertion is supported and follows the device manufacturer's procedures. Verify link activity and speed using the network equipment management interface or LED indicators. Route the cable to avoid sharp bends and maintain a minimum bend radius consistent with copper assemblies to preserve signal integrity.

Usage recommendations

Use this 1 m QSFP28 direct attach cable for short, fixed connections inside racks or between adjacent racks. Avoid prolonged exposure to temperatures or mechanical stresses outside normal data centre conditions. For longer distances or when optical isolation is required, consider optical transceivers and fiber cabling instead of direct-attach copper.