The Legria FS406 supports an SDXC compatible memory cards which is better than the SD compatible memory cards supported by most comparable spec camcorders that have been around for a similar time to it. This Canon video camera also supports an SDHC compatible memory cards. SDXC cards are SD cards but with a much higher capacity and faster processing speeds. They have a maximum capacity of 2TB (Terabytes).
An SDXC compatible memory cards is in fact the best supported memory card type amongst all video cameras of a similar age and type to the Legria FS406.
Amongst similar types of video camera the worst supported memory card type is MicroSD (Transflash).
SDHC cards are DS cards with a higher capacity of up to 32GB.