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
SanDisk 512GB Nintendo Switch MicroSD Card/Memory Card for Nintendo Switch Lite 512 GB (SDSQXAO-512G-GNCZN) Bundle with 1 SD & MicroSDXC Card Reader,.., By Brand SanDisk - Walmart.com