About This Part
The HP 845966-B21 is a high-performance QSFP28 optical transceiver designed for 100 Gigabit Ethernet applications, a critical component within modern data center and enterprise network infrastructures. This module, manufactured by HP, conforms to the QSFP28 form factor, ensuring compatibility with a wide array of networking equipment. Its primary function is to facilitate high-speed data transmission over short distances, specifically supporting the 100GBASE-SR4 standard. Technically, it operates at a nominal wavelength of 850nm, utilizing multi-mode fiber optic cables. The transceiver provides four independent transmit and receive channels, each capable of 25 Gbps, aggregating to a total data rate of 100 Gbps. It typically achieves a reach of up to 300 meters when deployed with OM4 multi-mode fiber, or 70 meters with OM3 fiber, making it ideal for inter-rack and intra-data center links. The optical interface is an MPO/MTP connector, which simplifies cable management for multi-lane optical signals. This robust design ensures reliable, high-bandwidth connectivity essential for demanding network environments. The HP 845966-B21 transceiver is extensively deployed in environments requiring high-density, high-speed interconnects, such as hyperscale data centers, enterprise server farms, and high-performance computing clusters. It is typically installed in 100 Gigabit Ethernet switches, routers, and network interface cards (NICs) that feature QSFP28 ports. This module is instrumental for connecting top-of-rack (ToR) switches to aggregation switches, or for server-to-switch uplinks where significant bandwidth is required over short to medium distances. Cloud service providers, large enterprises, and telecommunications operators leverage this technology to build resilient and scalable network backbones. The adoption of 100GBASE-SR4 transceivers like Part Number 845966-B21 addresses critical challenges such as bandwidth saturation, reducing network latency, and enabling the efficient operation of virtualized environments and data-intensive applications, including AI/ML workloads. It serves as a vital upgrade path from legacy 10G or 40G infrastructure, offering a cost-effective and power-efficient solution for increasing network capacity without a complete overhaul of the cabling plant for short-reach applications. For B2B clients seeking to optimize their capital expenditure without compromising network performance, Revo Distribution Limited offers used and meticulously refurbished units of the HP 845966-B21 QSFP28 transceiver. Our extensive inventory provides a critical resource for telecom operators, data center providers, and large enterprises looking for cost-effective infrastructure solutions. By supplying high-quality, pre-owned equipment, Revo enables these organizations to expand or upgrade their networks efficiently, meeting growing demand for bandwidth and capacity without the significant upfront investment associated with new hardware. Each refurbished unit undergoes rigorous testing to ensure it meets original specifications and delivers reliable performance, extending the operational lifecycle of existing infrastructure. This approach not only offers substantial cost savings but also supports sustainable IT practices by giving valuable equipment a second life. Partnering with Revo allows businesses to access essential components like the HP 845966-B21, ensuring their networks remain robust, scalable, and future-ready.
