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very fast, no problem (and better:a map offered).
I have had two problems with this card that may or may not affect others. Some specific older units (the StreetPilot Colormap) do not properly handle cards with greater than 16MB capacities. It take 4 hours to load the card over a serial link. A call to customer service pointed me to a free update. I think for my needs I can get by without it. I had difficulty with the card in my unit. I had an old version of Mapsource that did not recognize the 64MB cards. Why didn't I rate 5 stars.
The unit was acting very flaky. A call to Garmin customer service resulted in getting a in Warranty repair for an old unit. The USB programmer is a bit pricy but would really make life much easier. If you need program the card often you will want it for sure.
Garmin has very good phone support.I am having issues with my card though. I have an older streetpilot colormap. Upgrades are available on Garmin's web site(mine was way old). My unit limits you to 50 maps, but you can get a lot of Roads and Recreation maps in since they vary from 64k to 400K. Oh yes downloading nearly 64MB takes nearly four hours. It turns out that you can load more than 8 metroguide maps.
I might just have a defective card. In order to be compatable with this card you have to make sure that you have updated firmware (just download it from Garmin), and a current copy of mapsource. Depending on where I am in the map set the unit will hang and sometimes shut off while navigating a route. You can have as many maps as space allows. Since they aren't all 8MB this is a real plus. I will find out how Amazon handles these issues soon.
The USB interface is looking very attractive (even if it is expensive).
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