I have always transferred info from Mapsource into my Garmin MAP60CSx with the cable. It took forever...... I had an issue last night transferring maps into my GPS. For some reason Mapsource couldn't "find" my device. So this morning I removed the SD Micro chip and used the SD card adapter. This fits nicely into my laptop's card reader. Mapsource found the device in drive F: and the transfer of maps was.......well. Fast! In only a few minutes the transfer was complete. Before I would wait 15 minutes for the map set to build and another 15 minutes to send. Just goes to prove.....it's never too late to learn something new.