No. The CX wireless Wi-Fi adapters are designed to work with any TI-Navigator system. While the TI-Navigator software will remember any network adapter that has been associated with it, you can remove that association and re-associate the adapter with a different Navigator system when needed. This is true for adapters that come with a full navigator system or if they are purchased as an add-on.
TIL 4392: What products do I need to buy to use TI-Navigator if my class size is not 10 or 30 students?