We are seeking for some cost-effective SFP+ CWDM modules for our project to support 35km transmission. I've found that one CWDM case from FS Twitter has a similar situation with our current project. Since the network solution that they design for that case is pretty nice, I tried to consult with the AM to get some advice. The FS technical team helped us to check our link plan and even revise some details in our existing diagram, like calculating the fiber loss and confirming the modules' compatibility. Really appreciated the professional advice and considerate assistance of you guys. The modules that you recommended worked flawlessly on our switches, which are optimal for our 10G network. Thanks for your support!

Considering the financial cost, we gave up the transceivers from the original brand and decided to pick third-party transceivers from a reliable supplier. One of our friends recommended FS to us, and we found that the merchandise is fairly priced. Therefore, we bought 40 pcs of the 10G optical transceivers. Compatibility used to be our biggest concern. However, these modules are fully compatible with our Cisco switches and have been working perfectly without any problems till now. No complaints whatsoever.

Firstly and most importantly, the module worked well on our Cisco switch. Secondly, the package and the logistics were worth mentioning. We received the module without any scratches in three days or so.

We used these 10G CWDM SFP+ transceivers on our Cisco Nexus 93180YC-EX switches. Actually, they were bought to work with the 18CH CWDM Mux Demux we already had. Everything was fine. They were a perfect match and could offer 180Gbps data rates on the whole network.

The module is not bad, and the overall purchase experience is good. First of all, the packaging is intact without any damage. Secondly, the logistics is fast, received in three days. Finally and most importantly, it works well on my Cisco C9500-24Y4C.

First purchase from fs.com. There was no problem in appearance (no scratches or no sign of being used) when the modules were received, and even the packaging was intact. The modules worked well with our Cisco Nexus 5000 and Cisco 3850 without problems. Considering buying other products from them as well.

No compatibility problems so far, these were easily recognized by my Palo Alto firewall and MikroTik switches.

Compatible with cisco WS-C4948E MPC8548 and WS-C4948E-F?

I was in urgent need for these modules, needed to set up a connection for 35km. What I bought from others failed my test and I swapped to FS.com searching for correct transceivers. They passed my test and worked in a stable condition. These whole set of MUX and modules are working great. I’ve bookmarked their website. No doubt a nice one.thank you.

I used it to connect those equipment (Qnap High-Performance 8-Bay NAS with 2x10GbE (SFP+) Network, Hardware Encryption TS-831X-8G-US and Ubiquiti Switch with SFP+ port and my Cisco catalyst 2960) and it works perfectly.