... Prices 4. Standard:UL,CE 5.100% compatiable SFP+, 10GBASE-ER/EW, up to 40kmFeatures u 10Gb/s serial optical interface ... compliant to SFF-8431 specifications for enhanced 8.5 and 10 Gigabit small form factor pluggable module “SFP+”u 1310nm DFB ... pipesFor the details, pls contact us! SFP+ Optical Transceiver, 10GBASE-ER/EW, 40km Reach