SanDisk

Buying the base-model 64GB Steam Deck is like buying the smallest-capacity iPhone. You know you’re going to run out of space — and quickly. Unlike an iPhone, however, it’s easy to add a microSD card to the Steam Deck to use as secondary storage. The Steam Deck supports UHS-I (ultra-high speed) cards of the SD, SDXC and SDHC varieties, and adding one is very similar to doing the same on a Nintendo Switch. My advice is to go for capacity and price. The 512GB card above hit that sweet spot for me, but keep an eye out for sales on other models.