BaseCamp supports a wide range of Garmin devices. However, it will not support legacy Garmin devices, specifically devices that utilize the serial port connection.
Devices not compatible with BaseCamp are:
If the device is on this list, consider purchasing Trip and Waypoint Manager to transfer data to and from the computer.
Trip and Waypoint Manager - https://buy.garmin.com/shop/shop.do?pID=664&pvID=1951