Types of memory card:
There are numerous types of memory cards in use today, the most used memory cards today are the SD (Secure Digital) range of cards but even these can be really confusing to choose when they are not something you purchase regularly, if the device you need the card for is old or second hand without the original manufactures instruction sheet and specification it is possible to become easily confused.

The safest method to purchase a card is to try before you buy, unfortunately as most well known makes of card are supplied in sealed retail packaging most shops are reluctant to allow this, also as the best prices are now normally achieved by online purchase this option is not possible and once the sealed packaging has been opened return can be problematic. Let's look at some common examples.

 

2 GB SDHC Class 4:

Introduced in 1999 SD cards were far superior to the existing MMC cards and many MMC (MultiMediaCard) devises were fully combatable with the new cards, the correct designation for these original cards is SDSC (Secure Digital Standard Capacity). Click here to learn about SD memory cards.

compatibility list

 

4 GB SDHC Class 4:

Introduced in 1999 SD cards were far superior to the existing MMC cards and many MMC (MultiMediaCard) devises were fully combatable with the new cards, the correct designation for these original cards is SDSC (Secure Digital Standard Capacity). Click here to learn about SD memory cards.

compatibility list

 

8 GB SDHC Class 10:

Introduced in 1999 SD cards were far superior to the existing MMC cards and many MMC (MultiMediaCard) devises were fully combatable with the new cards, the correct designation for these original cards is SDSC (Secure Digital Standard Capacity). Click here to learn about SD memory cards.

compatibility list

 

16 GB SDHC Class 10:

Introduced in 1999 SD cards were far superior to the existing MMC cards and many MMC (MultiMediaCard) devises were fully combatable with the new cards, the correct designation for these original cards is SDSC (Secure Digital Standard Capacity). Click here to learn about SD memory cards.

compatibility list

 

32 GB SDHC Class 10:

Introduced in 1999 SD cards were far superior to the existing MMC cards and many MMC (MultiMediaCard) devises were fully combatable with the new cards, the correct designation for these original cards is SDSC (Secure Digital Standard Capacity). Click here to learn about SD memory cards.

compatibility list

 

64 GB SDHC Class 10:

Introduced in 1999 SD cards were far superior to the existing MMC cards and many MMC (MultiMediaCard) devises were fully combatable with the new cards, the correct designation for these original cards is SDSC (Secure Digital Standard Capacity). Click here to learn about SD memory cards.

compatibility list

 
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