My recently acquired Bonanza has a 430W with expired chart and terrain data. I'm new to the 430 but did figure out how to extract the data cards, only to discover that there must be some special devise I need to connect to my PC in order to upload current data. If this is correct, does anyone have an unused devise laying around? I realize I must purchase another data subscription from Garmin. I know the 430 is old technology but it's what I have until I can update the panel. Thanks, Robert