Nintendo's contact information is as follows: If your issue is that your 3DS or Switch is not reading any SD cards, then it is in need of a repair and you should contact Nintendo. Remember, if the price looks too good to be true, it is. If you are unsure, it's best to buy your card in a brick and mortar store instead of buying it online. If you want a reliable SD card, buy one from a reputable brand like SanDisk, Samsung, Kingston or PNY. They pretend to have larger storage than they really do, and then they quickly corrupt your data. If your SD card is larger than 512 GB and you paid less than $100 for it it's likely that it's a fake SD card. Please be aware that the vast majority of SD card issues come from using a fake SD card from China. Hi! Thank you for your submission to /r/NintendoHelp! Please note that we are a fan community and not officially endorsed by Nintendo.
![sd card association formatter sd card association formatter](https://2.img-dpreview.com/files/p/E~TS940x788~articles/7847794311/SD.jpeg)
SD Host Devices can only use SD memory cards.
![sd card association formatter sd card association formatter](https://i2.wp.com/www.yugatech.com/wp-content/uploads/2015/04/sd-format-480x193.png)
SDHC Host Devices can use both SD memory cards and SDHC memory cards. SDXC Host Devices can use SD memory cards, SDHC memory cards and SDXC memory cards. SDUC Host Devices can use SD memory cards, SDHC memory cards, SDXC memory cards and SDUC memory cards. SD memory cards can be used with SD devices, SDHC devices, SDXC devices and SDUC Host Devices. SDHC memory cards can be used with SDHC devices, SDXC devices and SDUC Host Devices. SDXC memory cards can be used with SDXC devices and SDUC Host Devices. SDUC memory cards must only be used with SDUC Host Devices. Interoperability of host devices and cards are shown below. Before inserting your SD memory card, confirm the device is compatible with the SD standard by locating an SD logo and other symbols on the device or referring to the device’s user manual or manufacturer information.