I've been using the included window suction mount for the first two days but that presented a problem. As I open the window it would hit the USB plug on the left side and would bend it. I imagine I could flip the device over, not sure if orientation is important, haven't tried. But I prefer to use a RAM mount on the dash using an adhesive ball as I used with the Garmin 770. I used the RAM Mount from my iPad Mini (X-Grip large or whatever it is) but discovered a problem with the Garmin RV 890. If you don't use the included mount (magnetic) it knows this and will sleep the device after a period of time if you don't interact with the screen. You can find this setting in the Display / Sleep area. I set it to 30 minutes. Due to my Garmin Drive app forwarding device notifications I will typically have interacted with the screen but twice it went to sleep on me. You have to press the button on the side to wake it again and then it has to recalc the trip, etc. I really would have hoped Garmin would have put a "never" option in this menu. I'm plugged in via USB so it's charging but regardless, if no magnetic mount it will sleep on you.