• Vibrant pink glossy Juniper EX-QSFP-40G-LX4 QSFP+ transceiver sticker
1 1

Juniper

Juniper EX-QSFP-40G-LX4 | 40GbE QSFP+ | 40GBASE-LX4 | 1310 nm WDM | 2 km SMF, 150 m OM4 / 100 m OM3 | LC duplex

EX-QSFP-40G-LX4

POA
POA
POA
Sale Sold out
Taxes included. Shipping calculated at checkout.

Description

QSFP+ 40GBASE-LX4 transceiver supporting 40 GbE over duplex LC, enabling cost-effective upgrades using existing MMF cabling and extended reach over SMF. Ideal for mixed-fiber campus backbones and aggregation uplinks on compatible Juniper EX platforms.

Features

- Duplex LC 40G upgrade—no MPO required
- Mixed-fiber flexibility: MMF short reach and SMF extended reach
- Standards-based 40GBASE-LX4 for wide interoperability
- Digital diagnostics (DOM) for proactive monitoring
- Optimized for campus and aggregation uplinks

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

View full details

specs-tabs

Technical Specifications

FAQs

Technical Specifications

- Speed: 40 Gigabit Ethernet
- Form factor: QSFP+
- Standard: 40GBASE-LX4
- Wavelengths: 4x ~1310 nm WDM lanes
- Fiber/cable: OM3/OM4 MMF and OS2 SMF
- Reach: 100 m (OM3), 150 m (OM4), up to 2 km (OS2 SMF)
- Connector: LC duplex
- DDM/DOM: Supported
- Breakout support: Not supported (requires same LX4 on both ends)

FAQs

Q: Can this module run over existing duplex MMF without MPO?
A: Yes. 40GBASE-LX4 uses duplex LC on OM3/OM4 multimode fiber, avoiding MPO cabling.

Q: Is it interoperable with 40GBASE-LR4 on SMF?
A: No. Use 40GBASE-LX4 on both ends for proper operation; LR4 and LX4 are not interoperable.

Q: Does this support 4x10G breakout?
A: No. LX4 carries four wavelengths over a single LC pair and does not support 4x10G breakout.

Q: What is the maximum reach on OM3 and OM4?
A: Up to 100 m on OM3 and up to 150 m on OM4.

Q: What is the maximum reach on single-mode fiber?
A: Up to 2 km over OS2 SMF.

  • Related products

Recently Viewed

  • Request a Quote

    Looking for competitive pricing? Submit a request, and our team will provide a tailored quote that fits your needs.

  • Contact Us Directly

    Have a question or need immediate assistance? Call us for expert advice and real-time support.

    Call us Now  

  • Contact Us Directly

    Have a question or need immediate assistance? Call us for expert advice and real-time support.

    Contact us