The SFP1GBX80UES is a Dell EMC SFP-1G-BX80-U compatible upstream fiber SFP transceiver which pairs with StarTech.com's SFP1GBX80DES. They are designed, programmed and tested to work with 1000Base-BX80 compatible Dell EMC switches and routers. The SFP transceiver module supports a maximum distance of up to 80 km (49.7 mi) and delivers dependable 1 GbE connectivity over fiber cabling. Technical Specifications: Wavelength: 1490nmTX/1550nmRX Maximum Data Transfer Rate: 1000 Mbps (1 Gbps) Type: Single Mode Fiber Connection Type: LC Connector Maximum Transfer Distance: 80 km (49.7 mi) Power Consumption: Low power consumption DDM: Yes This SFP fiber module is hot-swappable, making upgrades and replacements seamless by minimizing network disruptions. StarTech.com SFPs All StarTech.com SFP & SFP+ transceiver modules are backed by a lifetime warranty and free lifetime multilingual technical support. StarTech.com offers a wide variety of SFP modules and direct-attach SFP Cables, providing the convenience and reliability you need to ensure dependable network performance.