It was shipped in 3 days. Product was packed very well and quality is the best. Thank you !

FS optics are said to be very well known in the industry. The errorless interconnects enabled by FS 100GBASE-LR4 QSFP28 on Cisco NCS-5501-SE gave us one reason to choose FS and the 5-year long warranty of fiber optical modules makes it even more irresistible. I don’t look anywhere else now. With fantastic price and excellent service, FS is a great company to buy from.

Since the 100GBASE-LR4 QSFP28 has been confirmed on the Juniper Router MX204. We become a regular buyer of it for its affordably price and availability.

We have two campuses about 5km apart from each other. Our devices are Cisco NCS-5501 switches. So we ordered the new 100G LR4 modules with 10km transmission to connect the switches. When we received the products, they were protected in the hard plastic box. Installed on our switches, they worked as expected.

We wanted to buy 100G modules for our Juniper switch. We had a clear specification for new modules, 10km max. transmission, LC duplex connector, λ1296-1309 nm. We found that 100G-LR module #97851 may meet our specification and asked the sales whether it was OK for our device.
The sales asked our network environment in detail and then recommended another one 100G-LR4 #48355. He told us that, 100G-LR used PAM4, more suitable for 5G. And the equipment we decided to connect to the Juniper switch didn’t support PAM4. To ensure compatibility, we also asked FS to sent us 100G-LR4 module testing report. Finally, we bought #48355. We received the products on time. They run nice on our switch, 10/10 recommend.

Wanna some 100G transceivers for my Cisco ASR 9901 router and this one works. Very satisfied.

I use this transceiver on my Juniper QFX5120 and QFX5110 switches. Everything is all right. Fantastic product.

Choose FS for its wide range of transceiver types and the custom service. Always grant whatever is requested.The QSFP28 LR4 optics we purchased before worked well with Cisco Nexus 3000 Series N3K-C3232C, and now Arista* DCS-7160-48YC6 ones are urgently needed in a telecom project.The sales rep Bella has been done us great favor to coordinate the customization and make a quick deliver. We are the ICT service provider and deal with our clients just like FS helped us. Thank her a lot for delivering what we desired in such a favorable time and not complaining about our pushy, and weird requirements.

Build the intra and inter-data center programs. Two data center connects via OS2 SMF fiber cables with LC/APC connectors. Now need transceiver modules for an EdgeCore AS7712-32X switch; a switch to carry the traffic of servers; fiber cables go between switches, switch to servers.

Custom page is clear. Save time to confirm with sales the services available. Duplex OS2 fiber patch cable with one LC/APC and LC/UPC connector on each end and 100G LR4 transceivers are customized quickly enough to fulfill our task. No issue found while they are working on the EdgeCore AS7712-32X 32-port 100 GbE QSFP28 switch.

S5850-48S2Q4C has adequate 10G port, with hybrid 40G and 100G port enough to cover our needs. Haven’t spotted the interoperability issues with FS and other manufacturers when it comes to the spanning tree protocol. The cable organizers recommended worked nice, clean and beautiful. In a word, go get value goods at FS, rather than premium brands. Wise choice i’ve ever made. Anyway, FS impressed me with its efficiency and quality. We have, and will continue to, recommend FS to other companies and contacts. Our team could not be more satisfied with your work, and we look forward to continuing this relationship.

I have used FS.com 100G QSFP28 to 4x25G SFP28 DAC and 10G DAC in both production and lab environments with no issues. And our Juniper MX960 with MPC7MRATE module accepts well the 40GBASE-SR4 QSFP+. Now we have Inspur server and Juniper server in the factory that need to connect the Cisco 9336C-FX2 switch in near building. Ask the nice folks at FS. They're super helpful, and test that my configuration works with their optics. Apply one QSFP28 100G LR4 transceiver for trial, together with some LC OS2 patch cables. All is well. Indeed we have got in touch with various dealers, some we actively turn to, some throw themselves to our door. What sets FS apart from others is that their service does not end as the sales is done. Also the pick-up service is convenient as FS branch in Melbourne is only 15 minutes drive away from our office. Why seek far and neglect what lies close at hand. Good neighbor to have.