SanDisk Extreme Pro 512GB SDXC UHS-I Memory Card SDSDXXG-512G-ANCIN - Best Buy
Amazon Basic Micro SD 512 GB. I have just bought it for my Steam Deck because Sandisk cards prices rose and this card was on offer. It has solid writing speed in
Best MicroSD Card Deals: Save Up to $185 On Cards From SanDisk, Lexar and Samsung - CNET