Vexnet key 2 0 vex 276 3245 p the vexnet key 2 0 provides wireless communication between vex microcontrollers and vexnet joysticks this key utilizes the new vexnet 2 0 communication protocol over a custom 2 4 ghz radio p p the vexnet key 2 0 is a functionally identical replacement for the current vexnet key however a link cannot use a first generation key on one side and a vexnet key 2 0 on the other side of the link p vex vexnet key 2 0