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QSFP-40G-eSM4
40GBase-eSM4 Optical Transceiver,QSFP+,40G,Single-mode Modul...
Trusted by the Highest-Stakes Buyers
Federal agencies and Fortune 500 operations source through ORM Systems.
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Pay by PayPal or Revolut with full chargeback rights. Order on PO terms, Net-30 for government.
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Every registration we claim is public record — check our federal contractor status yourself before you spend a dollar.
Since 2016, Enterprise-Trusted
Ten years serving buyers who audit their vendors. From federal agencies to 20,000+ enterprise clients worldwide.
QSFP-40G-eSM4 is a QSFP transceiver module engineered to deliver a 40G data rate over short-range transmission using high-performance multimode fiber optics. Featuring an MPO connector and a wavelength typically centered around 850 nm, this module supports Ethernet protocols and is ideally suited for data center interconnects, enterprise networks, and telecom applications where efficient, high-speed data transmission is critical.
Designed with a compact form factor, the QSFP-40G-eSM4 fits seamlessly into high-density networking equipment while adhering to rigorous industry standards for performance and reliability. Its precise physical dimensions, power efficiency, and broad compatibility with leading vendors such as Cisco, Juniper, Huawei, and Arista further make it an excellent choice for modern network infrastructures.
QSFP-40G-eSM4 price is $754.62, a 87% saving from the Huawei list price of $5,804.84. QSFP-40G-eSM4 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for QSFP-40G-eSM4 for additional pricing. Browse the full Huawei Transceivers series or explore all Huawei products.
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| QSFP-40G-eSM4 |  DWDM-SFPGE-1559-79 |  DWDM-SFPGE-1546-92 |  XFP-STM64-LH40-SM1550 |  Huawei eSFP-FE-LX-SM1310-BIDI | |
|---|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | QSFP | SFP | SFP | XFP | SFP |
| Data Rate | 40G | 1G | 1G | 10G | 1G |
| Connector Type | MPO | LC | LC | LC | LC |
| Wavelength | 850 nm | 1559 nm | 1546.92 nm | 1550 nm | 1310 nm |
| Transmission Distance | Short-Range | Long-Range | Long-Range | Long-Range | Long-Range |
| Fiber Type | Multi-mode | Single-mode | Single-mode | Single-mode | Single-mode |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet, Fibre Channel | Ethernet |
| Network Interface | Fiber | Fiber | Fiber | Fiber | Fiber |
| 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, Arista | Cisco, Juniper, Huawei, Arista | Cisco, Juniper, Huawei, Arista | Huawei |
| Product Name | QSFP-40G-eSM4 | DWDM-SFPGE-1559-79 | DWDM-SFPGE-1546-92 | XFP-STM64-LH40-SM1550 | Huawei eSFP-FE-LX-SM1310-BIDI |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Stable 40G single mode optic with reliable 10km reach.
Clean optical lanes with predictable output.
Seamless breakout to SFP+ modules.
Consistent performance in aggregation layer.
Carrier grade reliability observed.
Dependable 40G QSFP+ module.
The QSFP-40G-eSM4 is a 40GBase-eSM4 QSFP+ single-mode optical transceiver operating at 1310 nm with an MPO interface, designed for 10 km links and connectivity to four SFP+ modules.
The QSFP-40G-eSM4 supports single-mode fiber transmission distances of up to 10 kilometers under standard operating conditions.
It operates at a nominal wavelength of 1310 nm, optimized for 40GBase-eSM4 single-mode optical links.
The module features an MPO (8-fiber) connector interface that provides four parallel transmit and receive lanes.
Yes. It aggregates four 10 Gbps lanes via an MPO breakout cable to connect seamlessly with four SFP+ transceivers.
The transceiver supports an aggregate data rate of 40 Gbps, comprising four independent 10 Gbps channels.
It requires single-mode fiber (SMF) optimized for 1310 nm wavelengths to achieve its specified reach.
It is compliant with IEEE 802.3ba 40GBase-eSM4 and QSFP+ MSA specifications for form factor, electrical, and optical performance.
Yes. It supports Digital Diagnostics Monitoring via a 2-wire serial interface for real-time monitoring of optical power, temperature, and supply voltage.
The module operates reliably within a temperature range of 0 °C to 70 °C (commercial grade).
Typical power consumption is ≤3.5 Watts per module, depending on link conditions and operating environment.
Insert the QSFP+ transceiver into a compatible QSFP port until it latches, connect the MPO cable, and verify link status via your network device.
Yes. The QSFP-40G-eSM4 is RoHS 6-compliant, ensuring it is free of hazardous substances like lead, mercury, and cadmium.
Yes. It adheres to the QSFP+ Multi-Source Agreement (MSA) for mechanical dimensions, electrical interfaces, and optical performance.
It is ideal for data center spine-leaf architectures, high-performance computing clusters, and enterprise core or distribution networks requiring 40 GbE up to 10 km.
Check fiber polarity and cleanliness, verify MPO breakout cable mapping, confirm SFP+ compatibility, and review DDM diagnostics for power and temperature anomalies.
United States
