This is an ASC/ASC fiber optic 19-inch 1U patch panel chassis with 48 ASC Duplex In and 48 ASC 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 ASC 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.