1
Q
Three form factors of Secure Digital (SD) cards
A
Original size (1999), mini (2003) and micro (2004)
2
Q
SDHC (2006)
A
High Capacity. Introduced 32GB storage and support for FAT32 storage system
3
Q
SDXC (2009)
A
eXtended Capacity. Supports cards up to 2TB and read speeds of 300MB/s. Mandatory use of exFAT file system.
4
Q
SDSC (1st gen)
A
Standard Capacity. Capacity up to 2GB. Read/write at 12.5MB/s.
5
Q
SDUC (2018)
A
Ultra Capacity. Up to 128TB and read speeds of 985MB/s.
6
Q
CompactFlash (1998)
A
Up to 512GB
7
Q
xD Picture card
A
eXtreme Digital. Sizes up to 2GB. No longer used.
Storage Devices
flashcards
Decks in class (6)
# Cards
