The Onn 512GB MicroSD Express Memory Card is still available at Walmart for $84.77 and the 256GB model is also available for $46.77, both with free shipping. Nintendo Switch 2 Compatible Onn 256GB Micro SDXC Express Card 17 $46.77 at WalmartThe Switch 2 console will only accept MicroSD Express cards. If you have a standard MicroSD card from your previous Switch, it won't work on the Switch 2. Although the two might look similar, the MicroSD Express card is much faster than its precedessor. This 512GB card will triple the total capacity and the 256GB card will double it.