This SFP+ (Small Form-factor Pluggable) Module from Dell is designed for high speed uplink data transmission. Moreover, it also supports Active and Passive Direct Attach. The Dell™ SFP28 SR transceiver delivers fiber connectivity to extend the range of your network. It delivers dependable 40 GbE connectivity over fiber cable, for 40GBase-SR4 compliant networks, with a maximum distance of. This Dell SFP-8G-ER compatible SFP+ transceiver supports 8GBASE-ER fibre channel throughput up to 40km over Single Mode Fiber (SMF). It complies with SFP+ MSA, SFF-8431, SFF-8432, and Fibre Channel standards, ensuring seamless interoperability within a multi-vendor storage network. This module. Dell SFP28-25G-LR Compatible 25GBASE-LR SFP28 1310nm 10km Duplex LC/UPC SMF DOM Optical Transceiver Module - FS.