Network Cable BlueOptics EB4J DAC SFP28 SC272701Q0.5M30 EB4J-BL BlueLAN

The BlueOptics EB4J DAC SFP28 SC272701Q0.5M30 EB4J-BL BlueLAN is a 0.5 meter direct attach copper (DAC) cable engineered for short-reach 25 Gbps links using SFP28 ports. It provides a pre-terminated, low-latency connection suitable for switching, server and storage interconnects in data center racks and top-of-rack configurations. The cable design focuses on stable signal transmission, mechanical robustness and straightforward installation in dense networking environments.

Advantages

This DAC SFP28 cable delivers high-bandwidth performance up to 25 Gbps with minimal signal loss due to its optimized copper conductors and shielding. Its short 0.5 m length reduces latency and cross-talk in rack deployments while simplifying cable management. The plug-and-play SFP28 form factor eliminates the need for separate transceivers, offering a cost-efficient and compact solution for high-density ports. Durable construction and secure connectors support repeated insertion cycles and maintain reliable contacts under typical data center conditions.

Suitable for

• Server-to-switch connections in rack and blade environments
• Top-of-rack switch interconnects
• High-bandwidth storage networking and SAN links
• Short-reach links in data centers and network closets

Key specifications

• Interface type: SFP28 direct attach copper (DAC)
• Length: 0.5 meter
• Data rate support: up to 25 Gbps
• Cable type: shielded copper with integrated connectors
• Typical use: short-reach, low-latency interconnects

How to use

Install the cable by inserting each SFP28 connector into the corresponding SFP28 port on the network devices until the latch engages. Ensure ports are powered down or in maintenance mode as required by your equipment vendor before insertion or removal to avoid link flaps. After installation, verify the link status in device management interfaces and confirm negotiated speeds and lane configuration. For best results, route the cable within the rack or tray to avoid sharp bends and minimize mechanical strain on the connectors.

Usage recommendations

Use this 0.5 m DAC cable for short, high-speed connections where SFP28 ports are available and transceiver-based solutions are unnecessary. Maintain bend radius guidelines, avoid excessive pulling force, and store unused cables in a dust-free environment to preserve connector integrity and link reliability.