If it still works, back up the Streets & Trips maps immediately—they are abandonware.
The Microsoft GPS 168 (often labeled as Model 1372) is not a standalone sat-nav unit. Instead, it is a wired GPS receiver (often called a "GPS puck") designed exclusively to work with Microsoft Streets & Trips (2006–2013 era) and Microsoft AutoRoute software on Windows laptops. microsoft navigation gps 168 model 1372
Note: This device is a vintage piece of tech history. If you found one, it is likely non-functional for modern navigation due to satellite system changes. Deep Dive: The Microsoft GPS 168 (Model 1372) – The Strange "Street & Trips" Puck If it still works, back up the Streets