The JBX01975 100BASE-EX SFP transceiver represents a reliable solution for enterprises requiring extended fiber optic network connectivity. This single-mode module transmits at 1310nm wavelength and achieves impressive 40-kilometer transmission distances over standard single-mode fiber (SMF-9/125 core), making it ideal for metropolitan area networks and campus-wide deployments. **Technical Excellence** Operating at 100Mbps data rates, this transceiver qualifies to IEEE 802.3u specifications, ensuring compatibility with legacy and modern network infrastructure. The duplex LC/UPC connectors provide secure, low-loss connections with UPC-grade polished ferrules (Ultra Polished Connector), minimizing back-reflection and signal degradation. **Safety & Compliance** Manufactured to stringent industry standards, the JBX01975 carries Class 1 Laser certification (LN #50 7/2001) and passes FDA 21CFR 1040.10 requirements. TUV and UL certifications validate comprehensive safety testing. RoHS/ELV directive compliance confirms hazardous substance restrictions, supporting sustainable procurement initiatives. **Robust Construction** The metal case with integrated laser transmitter withstands demanding deployment environments. Operating reliably across 0-70°C temperature ranges, this transceiver performs consistently in server rooms, network closets, and controlled outdoor installations. Dimensions of 5x4x2mm ensure compact SFP slot compatibility. **Extreme Networks Compatibility** This module directly replaces the Extreme Networks 100FX-SFP-LR-OM part number, guaranteeing seamless integration into existing deployments. Custom brand programming is available for organizations requiring specific firmware configurations. **Logistics & Support** Shipping from Danville, CA and Beaufort, SC locations provides rapid delivery. Orders exceeding $99 qualify for free standard shipping. A 90-day limited warranty covers defects, backed by professional technical support. The HS code 8544.70.0000 facilitates straightforward customs and procurement processing.