The Zoom Q4 supports an SDXC compatible memory cards which is better than the SD compatible memory cards supported by most camcorders of a similar age and type to it. This 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).
This camcorder's memory card type (SDXC) is in fact the best supported memory card type amongst all video cameras of a similar age and spec to the Q4.
The worst supported memory card type across similar types of camcorder is MicroSD (Transflash).
SDHC cards are DS cards with a higher capacity of up to 32GB.