Switch's Officially-Licensed Micro SD Card Collection Expands With New Fortnite Designs | Nintendo Life
Amazon.com: SanDisk Nintendo Switch MicroSD 256GB Memory Card (2 Pack) for Nintendo Switch OLED Model (SDSQXAO-256G-GNCZN) U3, Class 10, 4K UHD Bundle with (1) Everything But Stromboli MicroSDXC & SD Card Reader :
microSDXC™ Card for Nintendo Switch - 64GB (Legend of Zelda) - Nintendo Official Site
Nintendo Support: How to Insert/Remove microSD Cards