The Canon Vixia HF M40 supports a better memory card type than most similar spec camcorders that were released more than two years ago. This camcorder supports an SDXC memory card, whereas most small sensor size camcorders that are a comparable age to it support an SD memory card. This 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 amongst all small sensor size camcorders that have been on the market for more than two years.
The worst supported memory card type across similar types of video camera is MicroSD (Transflash).
SDHC cards are DS cards with a higher capacity of up to 32GB.