Customized 100GBASE-ZR4 QSFP28 1310nm 80km DOM Duplex LC SMF Optical Transceiver Module

FS always delivers high-quality modules and this one is also within my expectation. These Cisco compatible QSFP28 100G ZR modules work great as they are advertised. Though I’m still testing the performance of the last few parts, the testing results I’ve received are good enough as I’m concerned. They fit perfectly into the Cisco switch and meet our requirement to run it through transponders, amplifiers, and network management in the DWDM system. I can retrieve the QSFP28 info from them when using the modules in the Cisco QSFP28 100G ports. Happy to see that they perform similarly to Cisco brand ones. Will place more orders from fs.com.

Got several 100G SR4 modules but requiring 100G ZR4 QSFP28 modules for our current project. Not sure about the technical specifications, so I contacted my account manager. She confirmed that these 100G modules were compatible with my Juniper switches and we also bought some LC cables and patch panels to realize the connection with the help of the tech guys. We are thrilled by the professionalism and the thoughtfulness of the FS staff. Thanks again for your helpful advice and guidance!

A little bit worried about third-party vendors previously: products' quality & compatibility, shipping & delivery, after-sales services, etc. Things seemed to be different for FS. We purchased some 100G modules for testing. All of them passed our tests with great performances, and fully compatible with our switches. The parcels were intact and arrived on time, by the way. Totally beyond my imaginations. So we quickly placed another order for our data center 100G direct connection. They all could suit our demands and also reach the link lengths we required. They have been working flawlessly on our switches without a hitch. Five stars!