The use of it does not require a big learning curve. All are intuitive and user-friendly. A cable management bar at the rear side holds the outgoing cabling routes.

Bought these 100G ER4 modules for our 100Gbps connection between two sites with the distances of about 20-25 km. Compatible with my switches and operated well in a long term, these superior transceivers that suitable for long-haul transmissions have provided optimal 100GbE solutions for us.

We have grabbed some of the QSFP28-ER4-100G modules for trial on Cisco NCS Series and ASR Series before bulk ordering these fiber optic modules as a satisfied customer and wouldn’t hesitate using FS again. Money saved, and expert assistance to call on. The equipment arrived to site on time and for such a large and complex order, every item was spot on. All-in-all, FS is a top class telecommunications product supplier. What's not to like!

A superb product from an excellent supplier. It worked perfectly with Cisco nexus 3232c. I would recommend FS to any purchaser.

With the DOM feature, it is easy for us to troubleshoot the failure of the link, which offers us a lot of convenience. Nice feature.

The account managers from FS always help and answer my questions in a timely manner. A lot of thanks for recommending this module to help us to achieve 100Gbps transmission.

We ordered two for our 28km transmission, and hoped to receive them as soon as possible. The sales kindly arranged the shipping quickly and informed us of the logistics. The products arrived faster than we expected and ran well on our Cisco switches.

In a previous purchase, we bought DWDM MUX #75887 at FS. This time, we ordered the 100G-ER4 module to connect 1310nm port on the DWDM MUX. Before ordering, the sales confirmed our transmission distance and optical loss first, and suggested us to use fiber attenuators to ensure the module could work.

These 100G ER4 Optics worked well over dark fiber 34 km to connect two S5850-48S2Q4C switches. Trustworthy! FS

We want to splitter the 100G for 32 receivers 100m away from the signal source. A 1x32 PLC splitter is installed. Taking into consideration of the optical loss of the whole link, we need some optical transceiver modules with at least 20dB optical budget. The maximum power budget of 100G ER4 1310nm 40km Transceivers the sales recommended is 18db. But we still want to search for the one with at least 20dB and, consequently, come to an impasse. The good news, when we confide our worries, is that the tech person blaze a trail to suggest replacing the 1x32 PLC splitter with 1x4 and 1x8 splitters between which the SOA is placed. If the transceiver cannot deal with the link loss then add the SOA to amplify the optical signal. This is excellent. All work perfectly. I give it 5 stars for FS efficiency and professionalism. Save us from the dead end.