These are great. I highly recommend using these transceivers with MTP cables over using AOC cables. The price is similar, but this combination can be resized based on cable length needed or transceiver bandwidth needed.

On time delivery and FS always has great customer service!

Recently our company was about to upgrade the network to 100G, we had been considering choosing a reliable supplier. I ordered a few of these 100G QSFP28 modules and some cables from fs.com because other engineers I knew spoke highly of FS and recommended me to have a try. Now I just did tests on these QSFP28 modules, and it seemed FS product was pretty good. I plugged in these 100G modules and plugged in cables from switch ports and they began to run. Everything was OK. No compatibility issues. No performance issues. Bandwidth and transfer speeds were tested well. Happy to see they worked well with our application. This morning I received an email from my sales rep asking about my using experience. Very impressed by their considerate service. Without any doubt, I’ll buy more products here preparing for my company’s network upgrade and enter in long-term cooperation with FS in the future.

Compact, rock-solid modules looked the same as advertised. Tried it on one of my switches, a Cisco Nexus 3000 Series N3K-C3232C. Recognized immediately.

This module was priced very competitively and worked exactly as intended. MTP female 12 Fibers Type B OM4 trunk cable can work with it.

Several 100G optical transceivers were needed since we'd like to conduct a trial 100G connection between our Cisco NCS 5001 switches. I confirmed with my account manager about the compatibility issues before placing the order. These QSFP-100G-SR4 modules worked perfectly on our switches. No compatibility problems so far.

Quite interested in FS's S5850-48S2Q4C switch for our 100G connection. I consulted with the AM about recommendations for some relevant matching products. She recommended these QSFP-100G-SR4 modules accompanied by several fiber optic cables for me. These optical modules operated perfectly with the switches. No complaints whatsoever!

The 100G SR4 optical transceivers are used for the 100G DWDM solution established by FS technicians two months ago in our plant. Only 4 channels were put into service and the rest reserved for future expansion. All went well. Moreover, the subsequent expansion is easy to figure out by ourselves. Brought home the right amount of coherent modules and 100G SR4 optics as the technicians instructed. Things now go smoothly as they did at the very beginning. Very good service and quality.

Plug the modules in to Arista 7280CR2-60 and Arista 7260CX-64. And connect with 12 fibers type B OM4 trunk cable. Both recognize the optics.

We needed new 100G modules to connect our devices Cisco N9K-93180YC-EX switches. Before ordering, we wanted to confirm whether the modules could be compatible with our switch type. So we asked the sales whether they could do compatibility testing for us. The guy contacted their technical team immediately and did the testing on the same Cisco switch type in their FS testing center. Then the sales showed the testing result to us. He also recommended the matched cable #68017 to connect our new modules.
After we ordered modules and cables on FS, the sales quickly arranged the delivery. The products were packaged and shipped from FS warehouse in Delaware. We received them three days later from UPS. Professional and solid package protected our items well, running with our switches, there is 0 dropped packet.