Garmin GPSMAP Memory Upgrade Configurator - choose your Model:

4008
4010
4012
420/420s
4208
4210
4212
430/430s
440/440s
5008
5012
5015
520/520s
5208
5212
5215
525/525s
530/530s
535/535s
540/540s
545/545s
620
62s
62st
640
695
696
76CSx
78
78s
78sc