MB SD Connect C4 with Wifi diagnostic tool, which has been proved to be the best diagnostic and programming tool for Mercedes car models. With the WIFI Card, Mechanic can diagnose vehicles via WIFI network. Under this condition, they can enjoy an effortless experience using the tool without worrying the situation that they forget to bring the USB cable.
So before diagnosis with WIFI function,you need to know how to install the WIFI Card in advance. Below it's details described to install WIFI Card for MB SD C4:1. Use screwdriver to take out the screws with red marks at the picture below