Recently decided to upgrade our network switches to run fiber interconnects, but we have no idea about selecting the suitable SFP modules. What we wanted is the receiver sensitivity of the transceiver must be below 28dBm. So we asked our AM for help. She recommended this product with a receiver sensitivity no more than 23dBm, which can suit our demands. After receiving the package, we attached them in a few minutes and they were up and running from the very second they got turned on. They have now been in use for a while and are easily recommended for business use. Much thanks to our AM!

This isn’t the first time I've ordered products here. The service they provided was out of my expectations. All FS guys were very professional and gave me a quick response to every problem I encountered. Also the modules can work flawlessly with my Cisco gear. Would recommend FS to my friends.

FS.COM has helpd me catch up with my project. Actually I placed the order from other place at first, but they don't have stock , so I canceled that order and turned to FS.COM. Very happy with the fast delivery and the parts I needed. FS.COM is a good place for fiber products and never lets me down.

The 1000BASE-BX BiDi SFP works just as well as the original one. It worth what I paid for it, and would recommend.

The Cisco GLC-BX40-DA-I worked perfectly, and I have not had any issues with it whatsoever.

Easy website to browse, selected item was in stock at a good price. Excellent customer service and great prices on quality products. The SFP-GE-BX40 modules I have bought here can always perform well on my switches and I always buy with confidence here.