Delta AH500 series Manual Page 254

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AH500 Hardware Manual
6-2
6.1 Overview of Memory Cards
The AH500 series CPU modules support standard SD cards. Users can purchase products which meet
specifications. The specifications for the SD cards supported by the AH500 series CPU modules, and the
usage of the SD cards are described in this chapter.
6.1.1 Appearances of Memory Cards
SD cards are classified into three types according to size. They are SD cards, miniSD cards, and microSD
cards. The AH500 series CPU modules support standard-sized SD cards.
6.1.2 Specifications for Memory Cards
There are several specifications for SD cards on the market. SD cards not only can be classified according to
size, but also can be classified into three types according to capacity. These types are SD cards, SDHC cards,
and SDXC cards. The AH500 series CPU modules presently only support basic SD specifications. The
following is the table of SD card families. The SD column indicates the specifications supported by the AH500
series CPU modules. Be sure to purchase products which meet the specifications.
SD card families
Type SD SDHC SDXC
Capacity 2 GB Max. 4 GB~32 GB 32 GB~2 TB
File
system
FAT/FAT32 FAT32 exFAT
Size SD SDHC MiniSDHC MicroSDHC SDXC MicroSDXC
Speed
class
rating
N/A
Class 2 (Min. 2 MB/sec.)
Class 4 (Min. 4 MB/sec.)
Class 6 (Min. 6 MB/sec.)
Class 10 (Min. 10 MB/sec.)
Class 2 (Min. 2 MB/sec.)
Class 4 (Min. 4 MB/sec.)
Class 6 (Min. 6 MB/sec.) Class
10 (Min. 10 MB/sec.)
* MMC cards are similar to SD cards in appearance. Users have to make sure that they purchase products
which meet the specifications.
SD
MiniSD
MicroSD
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