Each R4i Card (version 1.43) SDHC device comes with the following components: 

1 x R4i card DS Card(slot 1)

1 x 4GB Micro SD Memory Card

1 x Micro SD USB card reader

Compatibility checker:

For the most recent consoles such as the DSi and DSi XL, the R4i card is the only card that can be used in conjunction with this console. The credentials of this item are virtually the same as the R4 SDHC card as they are made by the same manufacturer. This means a massive 32GB capacity for the device which means ample future upgradability using bigger memory cards if needed. The r4i card works with a external micro SD memory card allowing data to be stored. Without a memory card, a R4i card is not able to function on its own.

This is device is the only r4 adapter that can be used with DSi consoles in order be a media enhancer. The r4i card itself is the same size as a standard ds card game.

The main advantages of these devices are as follows:

Cheap and reliable device

Backward compatible with all previous versions of DS

Drag and drop facility

Exceptional build quality

Easy usage allowing playing of music, videos and eBooks via your console

Summary:

This is the only r4 card to have for your DSi or DSi XL as it is backward compatible and works with all variations of the DS consoles at present. The device is easy to setup and has a fantastic record in terms of durability and reliability. Added with fact that device usage can be expanded to future up to 32GB, this item is a must for any DSi owner young or old.