845966-B21 HPE 100Gb QSFP28 MPO SR4 100m Transceiver

The 845966-B21 HPE 100Gb QSFP28 MPO SR4 100m Transceiver is a high-speed optical transceiver designed to support 100 Gigabit Ethernet connectivity in modern data center and enterprise network environments. Based on the QSFP28 form factor, this transceiver provides a compact and efficient solution for high-density network deployments where bandwidth, port utilization, and reliable optical performance are essential.

Designed for short-reach multimode fiber applications, the transceiver uses an MPO interface and SR4 optical technology to deliver 100Gbps connectivity over suitable multimode fiber infrastructure. With a transmission distance of up to 100 meters under supported cabling conditions, it is well suited for server-to-switch, switch-to-switch, and other high-bandwidth interconnection scenarios within data centers.

The QSFP28 form factor enables four optical channels to operate together to achieve an aggregate data rate of 100Gbps. This architecture provides a practical upgrade path for networks migrating from lower-speed interfaces to 100GbE while maintaining a high-density optical footprint.

• 100Gbps aggregate data rate for high-bandwidth applications
• QSFP28 form factor for compact, high-density deployments
• MPO optical interface for simplified fiber connectivity
• SR4 multimode transmission technology
• Maximum reach of up to 100 meters on compatible multimode fiber
• Hot-pluggable design for easy installation and maintenance
• Ideal for data center and enterprise network environments

The 845966-B21 is particularly suitable for data center environments where high bandwidth and efficient rack-level connectivity are required. Typical applications include:

• Connections between network switches and aggregation equipment
• Server-to-switch interconnections
• High-performance computing infrastructure
• Network expansion and upgrade projects
• Structured, high-density fiber connections in data centers

Before installation, users should verify compatibility with the intended HPE switch, server, adapter, or other network platform. Optical modules should be deployed with fiber cabling and network equipment that meet the required technical specifications.

For MPO-based connections, proper connector polarity, fiber type, insertion loss, and cable quality should be verified before deployment. Actual transmission performance may vary according to optical budget, host equipment, and infrastructure conditions.

The 845966-B21 is an HPE 100Gb QSFP28 MPO SR4 optical transceiver designed for short-distance 100 Gigabit Ethernet connectivity over compatible multimode fiber infrastructure.

The module is designed for an aggregate data rate of 100Gbps, making it suitable for high-bandwidth data center and enterprise networking applications.

The transceiver is intended for multimode fiber applications. Appropriate MPO multimode fiber cabling should be selected according to the host equipment and required transmission distance.

The specified reach is up to 100 meters under appropriate supported multimode fiber conditions.

The 845966-B21 uses an MPO interface, supporting the parallel optical architecture associated with SR4 100GbE connectivity.