Data Sheet TTC MNSW-503-1 3-Port Network Switch Module Data Sheet Download Resource The file you are trying to access requires you to be logged in as a registered user. Registration is free, sign up today. Username Enter your Curtiss-Wright Defense Solutions username. Password Enter the password that accompanies your username. Forgot password? Don’t have an account? Register here. The MNSW-503-1 is a three-port 100BASE-T Ethernet full-duplex switch module for use in the Curtiss-Wright miniature networked product line. It provides upstream and downstream Ethernet chaining to any MnDAU stack in which it is installed.