The Nintendo Wii features a small internal hard drive that can store downloaded games, save game data and image files, and it also features a SD card slot to augment its internal memory. SD cards, or Secure Digital cards are small memory cards that can hold up to several gigabytes of data. SanDisk is one of many manufacturers of SD cards. The Wii is compatible with a wide variety of SD cards, not just those manufactured by SanDisk.
All Nintendo Wii consoles can use standard SD cards up to two gigabytes in size. Once you have updated your Wii to System Menu 4.0 or higher, you can also use SDHC cards. SDHC, or Secure Digital High Capacity, cards can store significantly more data than a standard SD card. If your Wii is running System Menu 4.0 or higher you can use SDHC cards with up to 32GB of storage. You can still only use standard SD cards with 2GB of storage. The Wii's SD card slot is only compatible with SD and SDHC cards that use the standard SD form factor. MiniSD cards and microSD cards require an adapter before they can be used with the Wii.
Compatible SanDisk Cards
Although many companies manufacture SD cards that are compatible with the Wii, SanDisk is one of only two companies to manufacture cards with the official Nintendo seal. These cards are colored white to match the Wii and are sold as SanDisk Gaming SD Wii cards. Many of SanDisk's other non-Nintendo branded SD cards are also compatible with the Wii. As of April 2011, SanDisk's 4GB SDHC, 8GB SDHC, 16GB SDHC, 32GB SDHC and 2GB Extreme III SDHC cards are all compatible with the Wii. SanDisk's microSD or miniSD cards will work with the Wii with the correct adapter, as long as they fit the Wii's size requirements for SD and SDHC cards.
The System Menu 4.0 update added a number of new SD card features to the Wii, including a special SD card menu that allows you to run downloaded games directly from the SD card and compatibility with SDHC cards. Your Wii must be connected to the Internet via a Wi-Fi or wired Ethernet connection before you can download the latest updates. You can configure your Wii's connection settings in the "Internet" section of the "Wii Settings" menu. Select "Wii System Update" from the third page of the "Wii Settings" menu to search for and download the latest updates for your Wii. After the update is installed, your Wii will restart and you will have access to the latest SD card features.
SD Card Installation
The Wii's SD card slot is under a small panel under the disc drive on the front of the console. To install a SD or SDHC card, simply open the panel and insert the card with the card's label facing toward the disc drive. Continue pushing the card until you feel it click into place. If you are using a microSD or miniSD card, you need to insert the card into a microSD to SD or miniSD to SD adapter before inserting it into the Wii. If you are running System Menu 4.0 or later, you can browse through the data on your SD card by selecting the SD card icon in the lower left corner of the screen. If you are running an older System Menu, you can browse the SD card's contents by selecting "Data Management" and "SD Card" from the "Wii" menu.