Of course they are, think of them as the modern replacement for a floppy disk but with no moving parts and much greater capacity!
You need the adapter for the mini/micro SD Cards.
error after formatting micro sd 128mb on nokia 6600?
Most cameras use SD or Compact Flash memory. Mini SD cards are rarely used, and have been almost entirely replaced by micro SD. You can buy an adapter for a micro SD card and most micro SD cards actually come with an adapter to fit in an SD card reader slot.
only micro sd cards
Ebay and craigslist
Sandisk is one of the largest producers of all forms of flash-memory based storage cards, including micro SD type. Kingston, ADATA, and Patriot are some other manufacturers of cheap micro SD cards.
There isn't a certain sd card for it. The sd card is called a micro sd card. These are usually found at stores that sell phones because phones ONLY take micro sd cards. if you want a regular sd card and You have a micro sd card, there is a thing called a micro sd card adapter that you can slide in your dsi and insert the micro.
Micro SD cards.
Only micro SD cards work with R4i.
The PSP Go does not use Micro SD cards, it uses Sony's Memory Stick Micro (M2).
Any Micro Sd would work, just as long as it stays under 4GB
Get a Micro-SD to SD adapter. It looks like an SD card that has space for the Micro-SD card. Some Micro-SD cards are supplied with the adapters.