Direct Attach Cable BlueOptics 25GBASE-CR SFP28 to SFP28, 0.5 m, AWG30 (980-9I63W-00A00A-BL)

BlueOptics passive Direct Attach Cable (DAC) with SFP28 to SFP28 connectors provides a short-reach, high-speed copper link designed for 25GBASE-CR applications. The 0.5 m assembly uses AWG30 twinax conductors to deliver reliable 25 Gbps connectivity between compatible SFP28 ports. This compact, low-latency cable is intended for server-to-switch and switch-to-switch connections in data center top-of-rack and rack-to-rack environments where short physical distance and cost-effective cabling are required.

Advantages

The passive twinax design eliminates the need for separate transceivers and reduces power consumption compared with active optical solutions. With fixed SFP28 terminations, the cable offers low insertion loss and minimal protocol overhead, supporting high-throughput links with predictable latency. Its 0.5 m length and AWG30 conductors make it suitable for tight rack layouts, and the robust connector housings ensure consistent mating cycles and mechanical stability in dense installations.

Suitable for

• Server-to-switch 25 Gbps links in top-of-rack deployments
• Switch-to-switch short-reach connections within the same rack or adjacent racks
• High-density rack environments requiring low-latency, low-power cabling
• Patch and fixed connections in data center access and aggregation layers

Key specifications

• Interface: SFP28 to SFP28
• Speed: 25 Gbps (25GBASE-CR)
• Length: 0.5 m
• Cable type: Passive twinax copper
• Conductor gauge: AWG30
• Typical use: Short-reach connectivity for data center racks

How to use

Connect each SFP28 connector to the corresponding SFP28 port on network equipment, ensuring that ports are powered down or link activity is disabled if recommended by the equipment vendor during insertion. Verify that the host devices recognize DAC connections and that link speed and duplex settings are configured for 25 Gbps operation. Secure any excess cable to avoid strain on the connectors and maintain appropriate airflow within the rack.

Usage recommendations

Use this 0.5 m DAC for direct, short-distance connections where low latency and low power consumption are priorities. Confirm compatibility with the network equipment vendor's supported cable assemblies and follow electrostatic discharge precautions when handling the cable and connectors.