Cisco QSFP-40G-ER4 Compatible 40GBASE-ER4 QSFP+ 1310nm 40km DOM Duplex LC SMF Optical Transceiver Module

40G QSFP+ ER4 optical transceiver

The 40GBASE-ER4 QSFP+ module extends 40G transmission to 40 kilometers over standard single-mode fiber, using four CWDM wavelengths and a sensitive APD receiver. It answers metro and long campus requirements without external amplifiers or dedicated transport shelves.

Compliant with the QSFP+ MSA, IEEE 802.3bm 40GBASE-ER4 and OTU3 standards, the module multiplexes its four lanes onto a duplex LC fiber pair and reports per-channel diagnostics through I2C. The APD-based receiver provides the sensitivity needed for the extended link budget, while the compact QSFP+ housing keeps power and panel density in check. Each unit is coded for Cisco QSFP-40G-ER4 and validated on live switching and transport platforms.

Cisco 40G Transceiver Models

Compare related modules by optical standard, reach and host part number rather than by form factor alone. Each linked reference has its own compatibility and ordering details.

QSFP-40G-ER4 | 40km QSFP-40G-CSR4 | 400m on OM4 QSFP-40G-LR4-20 | 20km QSFP-40G-PLRL4 | 2km QSFP-40G-SR-BD | 300m on OM3 / 400m on OM4 / 500m on OM5 QSFP-40G-SR4 | 150m on OM4 / 100m on OM3 QSFP-40G-SR4-S | 150m on OM4 / 100m on OM3 QSFP-40G-UNIV | 150m on OM3 / 2km on SMF QSFP-40GE-LR4 | 10km QSFP-4X10G-LR-S | 10km QSFP-LR4-40G-I | 10km QSFP-SR4-40G-I | 150m on OM4 / 100m on OM3 QSFP-ZR4-40G | 80km WSP-Q40GLR4L | 2km

Compatible Brands and OEM Part Numbers

Equivalent hardware references are linked where verified. Select the identity expected by the intended host; the same optical standard does not remove brand-specific compatibility requirements.

CiscoQSFP-40G-ER4 JuniperQSFPP-40GBASE-ER4 AristaQSFP-40G-ER4 Dell430-4917-40 HPE H3CJL306A Extreme10335 Brocade40G-QSFP-ER4 NVIDIA/Mellanox (Ethernet)MC2210511-ER4 H3CQSFP-40G-ER4-SM1310
 

40G QSFP+ ER4 Features

  • Extended-reach 40G up to 40km over OS2 fiber
  • Four CWDM lanes with APD receiver for high sensitivity
  • Duplex LC interface in hot-pluggable QSFP+ housing
  • IEEE 802.3bm 40GBASE-ER4 and OTU3 compliant
  • Full DOM/DDM per-channel monitoring
  • Tested for Cisco QSFP-40G-ER4 port compatibility

Typical Applications

  • Metro 40G links between data centers and offices
  • Long campus backbones up to 40km
  • Carrier and ISP access and aggregation
  • Redundant links to disaster recovery facilities

These 40G QSFP products are supplied with project support from our UAE office and production coordination from our Shenzhen factory. For datasheets, compatibility coding and lead-time confirmation, please use the contact page on this website.


UAE Fiber Optics

UAE office: Abu Dhabi,Al khaleej Al Arabi
Factory add: ZYT industrial area, Shiyan, Baoan district, Shenzhen, China 518000

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PDF catalogues of our products to download or for general inquiry, please send an email to sales@huihongfiber.com for details.

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