I have to say – your website is the best website I have ever worked with.

We have been happy with the quality of your modules. Thanks for your time.

Quick delivery. Worked Great!

I have received them and have installed them.
They work great and I will definitely purchase more of them.

Everything was fine with these 100G dual rate transceivers. They all worked smoothly on my Cisco switches. With these modules, my switches could achieve 100G and 112G transmission rates. Very satisfied with this purchase.

Bought these transceivers for my Cisco Nexus 93180YC-EX switches. I plugged the 100G modules on my switches and they were up and running from the very second after everything was ready. Until now, I haven’t seen any problems. Great products!

I need 100G OTU4 QSFP28 transceiver for 10 km to be used in Tejas network card model HCPSLINE28 card. I bought this dual rate module and it works smoothly on my devices. It is worth buying. By the way, the package is really careful and firm.

Worked as expected. We ordered what we thought was the right part. Great price and our self-developed circuit board accepted the dual-rate 100G module without issue. The module is also tested to be run on Packlight 2000M in OTU4 112G mode. Highly recommend FS to those who are searching for fiber optic transceiver modules of varied speeds. Everything is perfect.

Work well without any issues, and the quality is beyond what I expected! It implements 100G and 112G dual rate settings on my device.

I was doubtful before purchasingt this product because of its compatiblity issue, but in the end, it is compatible with my devices. I will come again!