QFX-SFP-1GE-SX Juniper Compatible 1G SFP SX 550m MMF Transceiver

The QFX-SFP-1GE-SX is a 1G SFP optical transceiver engineered as a drop-in equivalent for Juniper platforms,, recognized by the host as a genuine module and ready to pass traffic the moment it seats with no CLI changes.

• Form Factor: SFP
• Data Rate: 1G
• Protocol: SX
• Fiber Type: MMF
• Reach: 550m
• Connector: Duplex LC
• OEM Equivalent: QFX-SFP-1GE-SX

Compatibility: Documented OEM compatibility (Juniper published compatibility documentation): this module is accepted in 1G SFP ports on the ACX Series, EX2300 Series, EX3400 Series, EX4300 Series, EX4400 Series, MX204/MX Series, QFX5120 Series, and SRX Series. This module follows Juniper'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.

As a 1G short-reach module over multimode fiber, it is the classic access-layer optic for in-building uplinks, IDF-to-MDF runs, and edge-switch aggregation where copper distance falls short. It remains a staple in campus and enterprise networks still running gigabit to the closet over installed multimode. It operates 550m.

It is programmed to present native host values, so it interoperates link-to-link with OEM modules on the far end and coexists with installed optics in the same line card without compatibility flags.

Each unit is programmed to match Juniper host values and bench-tested for traffic conformity, DOM-threshold accuracy, and optical cleanliness before it leaves the bench. Class 1 laser certified and RoHS compliant.

Backed by the GreenLights4Life® Limited Lifetime Replacement Warranty. In stock and ships same or next business day.