HPE 100Gb QSFP28 SR4 100m Transceiver

The HPE 100Gb QSFP28 SR4 100m Transceiver (845966-B21) is a short-reach parallel multimode optical module designed to deliver 100 Gigabit Ethernet connectivity across HPE Synergy and ProLiant server fabrics. Built on a QSFP28 form factor, the module aggregates four 25Gbps NRZ lanes over an OM4 multimode fiber ribbon, reaching up to 100 metres and enabling dense, high-bandwidth interconnects within data centre rows and between adjacent racks. The SR4 architecture employs an MPO-12 connector interface and utilises 850 nm VCSEL transmitters paired with PIN photodetector receivers, conforming to the IEEE 802.3bm 100GBASE-SR4 standard.

Engineered for HPE's Composable Infrastructure ecosystem, this transceiver is validated for use in HPE Synergy Frame Link Modules, Virtual Connect SE 100Gb F32 Modules, and compatible HPE ProLiant network adapters and top-of-rack switches. Digital Optical Monitoring (DOM) capability allows real-time visibility into transmit power, receive power, temperature, supply voltage, and bias current through the host management interface, supporting proactive fault isolation without physical intervention. The module operates over a standard 3.3 V supply and adheres to the QSFP28 MSA electrical and mechanical specifications.

This transceiver addresses the bandwidth demands of east-west server-to-server traffic characteristic of scale-out compute clusters, software-defined storage fabrics, and high-performance virtualisation environments. Its parallel optic design keeps power consumption low relative to throughput delivered, making it suitable for high-density blade and rack deployments where thermal and power budgets are tightly constrained. HPE's firmware and management tooling, including HPE iLO and OneView, can surface DOM telemetry from these modules natively within existing operational workflows.

Ideal for

• Connecting HPE Synergy Compute Modules to Virtual Connect SE 100Gb F32 Modules within a Synergy Frame for composable east-west fabric traffic
• Providing 100GbE server-to-ToR switch uplinks in HPE ProLiant-based hyperconverged infrastructure clusters running VMware vSAN or Microsoft Storage Spaces Direct
• Enabling high-throughput interconnects between HPE ProLiant DL-series servers and 100G-capable top-of-rack switches in AI/ML training environments with high inter-node bandwidth requirements
• Supporting storage fabric connectivity between compute nodes and HPE Nimble or Primera all-flash arrays via 100G Ethernet in latency-sensitive OLTP workloads
• Delivering dense 100G breakout connectivity when paired with MPO-to-LC fan-out cables in data centre spine-leaf architectures built around HPE Aruba or third-party 100G switches
• Facilitating live migration and vMotion traffic at 100Gbps scale in large VMware or Red Hat OpenShift virtualisation estates housed across HPE blade and rack infrastructure

Technical specifications

Available from Omnixon Global. Submit an RFQ and our team will confirm configuration and availability for your order.