The Canon FS40 supports a better memory card type than most comparable spec camcorders that came out more than two years ago. This video camera supports an SDXC memory card, whereas most similar spec video cameras that were released more than two years ago support an SD memory card. This Canon video camera also supports an SDHC memory card. 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 memory card is actually the best supported memory card type across all video cameras that have been on the market for a comparable time to the FS40.
Across similar types of camcorder the worst supported memory card type is MicroSDXC.
SDHC cards are DS cards with a higher capacity of up to 32GB.