... Prices 4. Standard:UL,CE 5.100% compatiable SFP+, 10GBASE-ER/EW, up to 40kmFeatures u 10Gb/s serial optical interface ... compliant to 802.3ae 10GBASE-LRu Electrical interface compliant to SFF-8431 specifications ... pipesFor the details, pls contact us! SFP+ Optical Transceiver, 10GBASE-ER/EW, 40km Reach