定製40GBASE-LR4 QSFP+單模光模組 1310nm 10km DOM 雙工LC

Our company has bought FS fiber cables and patch panels before. They performed well. So we decided to try FS modules when our old ones had been broken.
Ordered these to connect two Cisco switches with fiber in a building to building run. We plugged some of them on our new hardware, and others on the old switches. The switches can recognize the modules without issue. All could run well with the hardware. They function like our old original modules, really good.

We ordered OEO, DWDM Mux/Demux, and other fiber accessories. All products were delivered promptly and accurately with solid packages, with no damages at all. Thanks for your helpful remote support, we finally had all the devices and products deployed, no issues so far. These transceiver modules work well on our juniper qfx5100-48s-6q switches which are connected onto the remote juniper qfx10002, and save us a ton of cash from having to purchase the original transceiver modules. Keep up the good work!

Firstly I ordered BD module for my switch, but found it couldn』t work well. I thought it was the quality problem of the module, my Account Manager and FS technical team told me actually my switch doesn't support BD module and suggested I choose LR4 module. So I exchanged the module. FS is right! The LR4 modules work fine! Many thanks for their help, FS team is really professional. They suggest I remark the switch model when I place an order in the future, then they can proceed to test for me accordingly.