The HDC-TM900 supports a better memory card type than most similar spec video cameras that were launched around the same time as it. This video camera supports an SDXC memory card, whereas most small sensor size camcorders that came out around the same time as it support an SD memory card. In addition, this camcorder 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).
This video camera's memory card type (SDXC) is actually the best supported memory card type amongst all small sensor size camcorders that have been on the market for a similar time to the HDC-TM900.
A MicroSD (Transflash) memory card is the worst supported memory card type across comparable types of video camera.
SDHC cards are DS cards with a higher capacity of up to 32GB.