QSFP-4X10G-LR-S Cisco Compatible 40G 10km SMF Transceiver

The QSFP-4X10G-LR-S is a 40G QSFP+ PLR4 optical transceiver compatible with Cisco platforms. Parallel single-mode breakout — the host reads it as a 4x10G breakout optic and brings up four independent 10G LR lanes. Hot-swappable; breakout mode is configured on the host platform.

• Form Factor: QSFP+
• Data Rate: 40G (4x 10G)
• Protocol: PLR4 Breakout
• Wavelength: 1310nm
• Fiber Type: SMF
• Reach: 10km
• Connector: MPO-12 APC
• OEM Equivalent: QSFP-4X10G-LR-S

Compatibility: Compatible with Cisco platforms — accepted in 40G QSFP+ ports on the ASR 9000 Series, Catalyst 9400 Series, Catalyst 9500 Series, Catalyst 9600 Series, NCS 5500 Series, Nexus 3000 Series, Nexus 9200 Series, Nexus 9300 Series, and Nexus 9500 Series. This module follows Cisco's published compatibility matrix; for your exact line card or OS release, email 10.4@tenfouroptics.com and we'll confirm fit.

Works with: 4× 10G LR (SMF) optics at the far end via an MPO-12 APC to 4x LC duplex breakout cable — this module identifies to the host as QSFP-4X10G-LR-S, so breakout configuration is available on platforms that restrict it for LR4-identified modules.

Tested & Proven: Every TenFour Optics part is coded, tested, and verified before shipment — see Tested & Proven.

OEM-compatible and MSA-compliant. Manufactured to MSA specifications following ISO-certified processes. Class 1 laser certified, RoHS compliant. Digital Diagnostic Monitoring (DDM/DOM) supported. Every module is tested for traffic conformity per supported layer 2/3 protocols, DOM threshold verification, EEPROM/MSA value verification, serial number verification, and optical cleanliness before shipment.

Backed by the GreenLights4Life® Limited Lifetime Replacement Warranty. In-stock items ship same or next business day.