I had been looking for a cable with MTP/MPO on one side and 4 LC connectors on the other side among several vendors for 40G-10G links. Someone recommended FS.COM on the forum so I came here. FS customer service was very considerate. They took good care of my needs and suggested this item and other matched products which exactly fitted for my network. The price here was also more reasonable than others. In a few days, the package arrived. It seemed very high quality and durable. No errors so far with the cable.