Micro USB OTG to USB 2.0 Adapter SD/Micro SD Card Reader Standard USB | Groupon
Amazon.com: SanDisk 128GB microSDXC-Card, Licensed for Nintendo-Switch - SDSQXAO-128G-GNCZN & 128GB Ultra microSDXC UHS-I Memory Card with Adapter - 120MB/s, C10, U1, Full HD, A1 : Electronics
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