The SFP1000ZXST is an MSA compliant fiber SFP transceiver that\'s designed, programmed and tested to work with 1000BASE-ZX compatible MSA switches and routers. The SFP transceiver module supports a maximum distance of up to 80 km (49. 7 mi) and delivers dependable 1 Gb E connectivity over fiber cabling. Technical Specifications: Wavelength: 1550nm Maximum Data Transfer Rate: 1. 25 Gbps Type: Single Mode Fiber Connection Type: LC Connector Maximum Transfer Distance: 80 km (49. 7 mi) Power Consumption: Less than 1 Watt DDM: Yes