It is used for different kinds of modules and applied to the working area subsystem. It uses embedded surface frame, easy to install and disassemble, it is with protective door and dusty free, can do OEM for any customers and print requested LOGO. With application of fiber SC/LC simplex, duplex and other different environment installed plate or flush plate. All modules can be configured on customer’s choice. Cable management can be connected without cutting(with express port). All modules are free of welding.