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Cisco QSFP-40G-LR4-S= 40GBASE-LR4 QSFP Transceiver Module, LC, 10KM

VENDOR: CISCO Mfg Part#: QSFP-40G-LR4-S= UPC#: 882658786167
  • The Cisco QSFP-40G-LR4-S= is a 40GBASE-LR4 QSFP transceiver module engineered for high-performance 40 Gbps Ethernet over single-mode fiber (SMF). Designed with duplex LC connectors and operating at a 1310 nm wavelength, it delivers up to 10 km of reliable data transmission. Backed by a 5-year standard warranty, this solution is ideal for high-capacity, long-distance networking applications.
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$14,032.83
$14,032.83
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  • QSFP form factor for high-density networking environments
  • Supports 40 Gbps data transfer rate over single-mode fiber (SMF)
  • Operates at 1310 nm wavelength for long-distance transmission
  • Maximum reach of up to 10 kilometers with LC connectors
  • Compliant with IEEE 802.3ba standards
  • Backed by a 5-year standard warranty
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Key Benefits

Eye-Insights
  • Enables long-range 40G Ethernet connectivity up to 10 km for enterprise and campus networks
  • Compact form factor and TAA compliance make it ideal for government and commercial use
  • Cisco-backed 5-year warranty ensures dependable performance and investment protection

Product Overview

The Cisco QSFP-40G-LR4-S= is a high-speed optical transceiver module designed for 40 Gigabit Ethernet connectivity over long distances. With a QSFP form factor and support for SMF cabling, it offers reliable, high-bandwidth performance for data centers and enterprise backbone networks. The device transmits data at 40 Gbps using 1310 nm wavelength optics and supports a maximum transfer distance of 10 kilometers via duplex LC connectors.

Compliant with IEEE 802.3ba standards, this module ensures compatibility with leading networking infrastructure. Its compact footprint—measuring only 18.4 mm in width, 13.5 mm in height, and 72.4 mm in depth—makes it easy to integrate into dense equipment racks. The wired connectivity and advanced components contribute to consistent signal integrity across extended distances. Featuring manufacturing origins in tier-one locations such as China, Japan, and the USA, and TAA compliance, it is suitable for both commercial and government-grade networks.

Supported by a standard 5-year warranty, this Cisco transceiver module offers a cost-effective and scalable solution for organizations looking to expand high-speed fiber infrastructure without compromising reliability. This makes it an excellent choice for environments that require consistent uptime and regulatory compliance.

Specifications

Primary Information
Device Type Transceiver
Form Factor QSFP
Cabling Type SMF
Data Transfer Rate 40 Gbps
Connectivity Technology Wired
Wave Length 1310 nm
Max Transfer Distance 10 Km
Interfaces QSFP, LC

Dimensions&Miscellaneous
Width 18.4 Mm
Depth 72.4 Mm
Height 13.5 Mm

Special Feature
COO CHINA / JAPAN / MALAYSIA / TAIWAN / UNITED STATES
TAA compliance Yes

Networking
Data Link Protocol Gigabit Ethernet
Networking Compliant Standards IEEE 802.3ba

Service&Support
Service & Support Type Standard warranty: 5 years

UNSPSC Code
UNSPSC Code 43222608

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Since 2003, the Eye-In team has supplied and supported large-scale deployments coast to coast. Eye-In Technologies is our dedicated online storefront—built for easy purchasing, quote requests, and dependable follow-through. We offer US + Canada coverage, volume pricing for projects, a documented RMA process, and direct support.