They work.

I bought these Cisco GLC-TA for application in my main office. At first, I saw the module with such favorable price, and a little worried about the quality and compatibility. So I made the double check with their sales. They shared that they had installed high-end test center from 1G to 100Gbps including kinds of switches. And every transceiver would be tested well to make sure its 100% performanc...

I purchased it for my company, when I received the purchasing task, it requires good performance, but the cost was limited. After looking for many vendors for a long time, finally I found FS which completely met the requirements, but I’m not relaxed until I know that our technical engineers had finished the test and were very satisfied with the performance. Whenever we need fiber optics, we woul...

Epic service, fast replies, faster shipping.I love buying products from Fibersum, they seem to know my needs.It is nice to have a supplier that targets your satisfaction first and foremost.As I mentioned many times before, wonderful site, best support ever.There are many ways to buy SFP's, make sure you talk to support first before you buy them.Support can advise you regarding the supported hardwa...

Fibersum.com has been great with there products and service. I'm on the east cost and getting the products that I need has always been fast. When I did have an issue (product was out of stock) I called their support team and they found a replacement. Now they are opening a warehouse on the east cost that's going to be even better.

A+ Service. Thanks

Amazing Customer Support, Amazing communication from Fibersum.com as my complete order is delayed and the email setting my expections as to when I'll receive the remainder of my order was EXCELLENT and VERY MUCH appreciated.

Fibersum.com is a pleasure to deal with. Very professional, good communication and follow up, good quality products. Keep it up.

Great service, Item has been received

Easy to order, quality product at an affordable price. I recently made my first purchase from Fibersum.com, ordering process was simple and easy. Transceivers look great and work as expected, sound just doesn't blow me away. Everything went well, no complaints. My experience with Fibersum definitely exceeded my expectations!