FS（飞速） XFP-10G-BX80 BiDi XFP万兆单纤双向光模块 1330nm-TX/1270nm-RX 80km

little worried about the third party transceivers, just had a try and found it work perfectly. competitive price than original transceivers. really amazing and I will come back.

The shipping speed is impressive, and the transceivers work with 100% compatibility to achieve 80 km data transmission. Nice !

Transceiver is the best design in 21st century. With the help of it, I can improve my network speed faster and easier.