The HC-V550 supports an SDXC memory card which is better than the SD memory card supported by most video cameras of a similar spec and age to it. In addition, this Sharp 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).
An SDXC memory card is actually the best supported memory card type across all small sensor size camcorders that are a comparable age to the HC-V550.
A MicroSD (Transflash) memory card is the worst supported memory card type amongst comparable types of video camera.
SDHC cards are DS cards with a higher capacity of up to 32GB.