The Sony HDR-CX210 supports an SDXC compatible memory cards which is better than most video cameras that have been around for a comparable time to it. Most camcorders of this type and age support an SDHC compatible memory cards. This video camera also support MS PRO Duo and MS Pro-HG Duo and SD compatible memory cardss. 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 across all comparable spec video cameras that came out around the same time as the HDR-CX210.
Across comparable 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.