I'm not very experienced with electronics so this might be a simple question: I have a tool that outputs signal information through a serial cable. I have two devices that connect with it, so I physically pull the plug and switch connections when needed. However, I would like to create a box with all three things connected and switch between the destinations with one switch. However, since there are several pins in use, I'm not sure how to do this without actually using a switch for each pin. Is there an easy way to do this? I would prefer to not have to power this switch also. Thanks!