The JVC GZ-R310 supports an SDXC memory card which is better than most camcorders that have been on the market for more than a year. Most comparable spec video cameras that are a similar age to 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 camcorder's memory card type (SDXC) is actually the best supported memory card type amongst all comparable spec video cameras that have been on the market for around the same time as the GZ-R310.
An SD memory card is the worst supported memory card type amongst similar types of camcorder.
SDHC cards are DS cards with a higher capacity of up to 32GB.