BlueOptics R4G19A-BL InfiniBand fibre optic cable 1 m SFP28 Male Male

The BlueOptics R4G19A-BL InfiniBand fibre optic cable 1 m SFP28 Male Male is a 1 meter direct attach solution designed for high-speed short-reach connections. With SFP28 connectors on both ends, the cable supports 25 Gbps-class links and is suitable for linking switches, routers and storage equipment that accept SFP28 interfaces. The construction is intended for reliable electrical signal transmission in rack and adjacent-rack environments where passive direct attach cabling is supported.

Advantages

This cable provides a compact, low-latency connection with predictable performance for 25G applications. As a passive direct attach cable it consumes minimal power, requires no separate transceivers, and reduces component count in rack deployments. The product is built to industry MSA guidelines and uses components selected for longevity and consistent compatibility with platforms that support the equivalent 25G direct attach specification.

Suitable for

• Short-reach interconnects between switches and top-of-rack devices
• Connections between storage arrays and host adapters supporting 25G SFP28
• High-density rack installations with adjacent-rack cabling needs
• Environments requiring low-latency, low-power direct attach links

Key specifications

• Length: 1 meter
• Connector type: SFP28 male to SFP28 male
• Transmission rate: up to 25 Gbps per lane (25G class direct attach)
• Cable type: passive direct attach twinax (copper) suitable for short distances
• Wire gauge: 30 AWG
• Compliance: MSA-compliant design

How to use

Install the cable by firmly inserting each SFP28 connector into the corresponding SFP28 port on your networking equipment until the latch engages. Ensure both endpoints support passive direct attach twinax connections and the 25G protocol you intend to run (Ethernet, FCoE, or InfiniBand). Route the cable within the rack or between adjacent racks avoiding tight bends and excessive mechanical strain. No external power or transceivers are required for passive operation.

Recommendations

Verify platform support and firmware compatibility before deployment; test a sample connection on critical links to confirm link training and protocol operation. Keep the cable within recommended bend radius limits and avoid exposure to sharp edges or heavy compression to maintain signal integrity and long service life.