From Amazon
Transcend 512GB microSDXC 300S Class 10 Memory Card with up to 95/45 MB/s (for Smartphones, Digital Camers and Nintendo Switch Consoles) with SD Adapter TS512GUSD300S-A
Memory C
512GB Transcend 300S microSDXC UHS-I U3 V30 A1 CL10 Memory Card with SD Adapter 95MB/sec
This product is also available at 2 unverified merchants.