FN-100G-ER4 Fortinet Compatible 100G QSFP28 ER4 40km SMF Transceiver

The FN-100G-ER4 is a 100G QSFP28 optical transceiver compatible with Fortinet platforms. Plug-and-play, no configuration required.

• Form Factor: QSFP28
• Data Rate: 100G
• Protocol: ER4
• Wavelength: 1550nm
• Fiber Type: SMF
• Reach: 40km
• Connector: Duplex LC
• OEM Equivalent: FN-100G-ER4

Compatibility: Documented OEM compatibility (Fortinet published compatibility documentation): this module is accepted in 100G QSFP28 ports on the FortiGate 1800F Series, FortiGate 2600F Series, FortiGate 3400E Series, FortiGate 3500F Series, FortiGate 4200F Series, FortiGate 4400F Series, FortiSwitch 1024E, FortiSwitch 1048G, FortiSwitch 2048F, and FortiSwitch 3032G. This module follows Fortinet'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.

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 — contact 10.4@tenfouroptics.com to confirm availability and lead time. Trusted by network engineers and procurement teams across North America for 10 years.