SFP28 network transceiver BLUEOPTICS S4J91A-BO single-port 25Gbps, SFP28 form factor, compatible with HPE S4J91A

BLUEOPTICS S4J91A-BO is a single-port SFP28 network transceiver designed for 25Gbps Ethernet links. The module fits into standard SFP28 ports and provides a 25Gbps uplink for switches, servers and network appliances. It is a compatible alternative for HPE S4J91A and is intended for expanding or replacing 25GbE interfaces in data center and enterprise environments. The transceiver supports plug-and-play installation to enable fast deployment of high-speed connections.

Advantages

This SFP28 module offers a compact form factor and low-power operation while delivering 25Gbps line-rate performance. Compatibility with common SFP28 slot designs ensures easy interchangeability when upgrading or replacing existing 25GbE interfaces. The plug-and-play capability simplifies installation without requiring additional configuration on supported devices. The module is suitable for high-density deployments due to its small footprint.

Suitable for

Key specifications

How to use

Insert the BLUEOPTICS S4J91A-BO transceiver into a compatible SFP28 port on your switch, server or appliance until it clicks into place. Connect the appropriate fiber or copper cable to the module according to the chosen media type and route the cable to the remote device. The device should detect the transceiver automatically; verify the link status and data rate on the host device or management interface. To remove the module, depress the release mechanism on the port and gently pull the transceiver out.

Recommendations

Ensure the host device firmware and optics compatibility list support third-party SFP28 modules. Use the correct fiber type, cabling and transceiver variant for your required link distance and environment. Handle the transceiver by the housing, keep connectors capped when not in use, and follow electrostatic discharge (ESD) precautions during installation and removal.