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841716-B21
QSFP+ 40GB BI-DIRECTIONAL XCVR PL=SI
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841716-B21 is a high-performance SFP+ transceiver module engineered to deliver 10G data rate connectivity for short-range applications. Featuring LC connectors and optimized for multi-mode fiber infrastructure, this 10GBASE-SR transceiver supports Ethernet protocols within compact form factor designs ideal for dense data center and enterprise network deployments.
Designed for robust performance in dynamic networking environments, the 841716-B21 meets strict operational standards while ensuring seamless compatibility with leading network platforms such as Cisco, Juniper, Huawei, and Arista. Its reliable design, defined physical dimensions, and efficient power usage make it a preferred choice for telecom and data center applications requiring swift and secure optical transmission.
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In a global finance firm’s flagship data center, network architects consolidated four 10 GbE uplinks from each Top-of-Rack (ToR) switch into a single 40 GbE trunk using the 841716-B21 QSFP+ 40 GB Bi-Directional Transceiver. This bi-directional module leverages existing duplex multimode fiber to halve cabling complexity and cost. Outcome: 75% reduction in fiber plant expenses, simplified port management on core switches, and a sustained 40 GbE aggregate throughput with full vendor support and rigorous testing for financial-grade SLA compliance.
A university supercomputing center deployed the 841716-B21 QSFP+ transceivers to link GPU-accelerated compute nodes over short-reach multimode fiber. By converting each 40 GbE port into a dual 20 Gbps bidirectional channel, researchers achieved low-latency, high-bandwidth inter-node communication for large-scale simulations. Outcome: 30% faster job completion on MPI workloads, reduced power consumption per rack by 15 W per port, and seamless integration with existing HPE networking infrastructure for predictable cluster scaling.
A multinational university leveraged 841716-B21 QSFP+ 40 GB Bi-Directional Transceivers to modernize its campus backbone over legacy OM3 multimode fiber. Without running new cabling, IT upgraded six key buildings from 10 GbE to 40 GbE connectivity by using four-pair bidirectional MHz-graded optics. Outcome: Zero civil-works downtime, 4× per-link capacity increase, and a 60% savings in capital and labor compared to a new fiber install — all while meeting academic network reliability targets.
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| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | SFP+ | SFP+ | SFP28 | SFP+ | CFP2 |
| Data Rate | 10G | 10G | 25G | 10G | 100G |
| Connector Type | LC | LC | LC | LC | LC |
| Wavelength | 850 nm | N/A | 850nm | 1310nm | 1550nm |
| Transmission Distance | Short-Range | Short-Range | Short-Range | Short-Range | Long-Range |
| Fiber Type | Multi-mode | Multi-mode | Multi-mode | Single-mode | Single-mode |
| Max Distance | 300 meters | 300 meters | 100 meters | 80km | 80km |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet | Ethernet, Fibre Channel |
| Network Interface | Fiber | Fiber | Fiber | Fiber | Ethernet |
| Power Consumption | N/A | 2.5W | N/A | 3.5W | 20W |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Compatibility | Cisco / Juniper / Huawei / Arista | Cisco, Juniper, Huawei | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista |
| Product Name | 841716-B21 10GBASE-SR SFP+ Transceiver | AP783A 10GBASE SFP+ Optical Transceiver | C8R25B 25G SFP28 Transceiver | QK724A SFP+ Optical Transceiver | AW537A 100G CFP2 Transceiver Module |
| Height | N/A | 0.2 inches | N/A | 0.65 inches | 1.0 inches |
| Width | N/A | 0.87 inches | N/A | 2.0 inches | 4.3 inches |
| Depth | N/A | 1.5 inches | N/A | 1.0 inches | 3.9 inches |
| Weight | N/A | 0.1 lbs | N/A | 0.1 lbs | 1.8 lbs |
Bi directional QSFP+ transceiver simplified fiber usage.
Stable 40Gb connectivity.
Good optics performance.
Easy deployment.
Satisfied with results.
This transceiver delivers up to 40 Gbps aggregated bandwidth, providing two simultaneous 20 Gbps channels over a single fiber link for high-performance data transmission.
It is compatible with single-mode fiber (SMF), enabling long-distance connectivity with low signal loss and optimal performance.
When used with G.652 compliant single-mode fiber, it supports link distances up to 10 km at full 40 Gbps throughput.
Bi-directional operation uses wavelength-division multiplexing (WDM) to send and receive data over a single fiber by assigning different wavelengths for each direction.