We believe that our combination of price, knowledge and customer service is the best that you will find anywhere. the maps of Canada and USA do not fit on the GPS unit, so it suggests to install the the SD card, which I bought. Unfortunately, their AWFUL software doesnt recognize it. I've left a message to Garmin support, but I doubt they will be of any help. And, on a further note to that, why don't they start adding more memory to the unit, like 16gb or even 32gb since memory is so cheap now, instead of that measly 2gb ??If you've purchased a map update or lifetime membership from Garmin, you can download map updates through the Garmin Express program.

Update: Garmin FAQ 10/16/2012 ----- Garmin ----- Question: What is the slot on the side of the nuvi used for?

I have an 8gb card that works perfectly on my 750, and others in this thread have mentioned using other sizes on various units. The nuvi is connected to the Alpine head unit with a V-LINK cable and it sounds great plaing my MP3's.

Getting Official Garmin Map Updates Using Maps from Other Sources Community Q&A Before you go on a road trip, you may want to update the maps on your Garmin Nuvi GPS device so you have the latest map data and won’t get lost.

if you still get stuck on the loading screen, please let me know. Can you see the garmin as a device with removable storage..? Let me ask you this, do you have an SD card inserted into your garmin? Im sorry that weve had to come to this conclusion, but without the device being readable, weve hit the end of what you and I can do together.

US: 913-397-8200 US Toll Free: 1-800-800-1020 Canada: 1-866-429-9296 Mon–Thurs: 8 a.m.–6 p.m. Central Time (closed holidays) If they wont repair it for free, then were going to have to either pay garmin or send this in to a GPS repair shop to get it fixed..