This is an LC/LC fiber optic 19-inch 1U patch panel chassis with 48 LC Duplex In and 48 LC Duplex Out, single-mode duplex OS2. It is a highly flexible fiber management unit that can be used stand-alone. Additionally, we also supply high-quality LC cassettes designed to reduce installation time and cost for optical network infrastructures in the premises environment. All of our products are 100% guaranteed to work, providing you a cost effective solution for all of your network upgrade needs.