Cisco WSP-Q40GLR4L Compatible 40G QSFP+ LR4L 1271nm, 1291nm, 1311nm, 1331nm 2km Transceiver Module

The WSP-Q40GLR4L is an optical transceiver module from TenFourOptics. Plug-and-play, no configuration required. Key specifications: 40G, 2km, 1271nm, LC/UPC, SMF.

• Data rate: 40G
• Reach: 2km
• Wavelength: 1271nm
• Connector: LC/UPC

Compatibility: Documented OEM compatibility (Cisco published compatibility documentation): this module is 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.

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

Backed by the GreenLights4Life® Limited Lifetime Replacement Warranty. In-stock items ship same or next business day — contact 10.4@tenfouroptics.com to confirm availability and lead time. Trusted by network engineers and procurement teams across North America for 10 years.