Amazon.com: JJC Huawei Nano Memory NM Card Reader Writer, USB 3.0 USB-C Type-C to NM Nano Memory SD MicroSD Card, Data Transfer Speed up to 90MB/S for Huawei Smartphone and Laptop :
Huawei 256GB 128GB 64GB 256G 128G 64G NM Memory Card Nano 90MBs for P30 Mate20 X | eBay
Nano Sd Card
Amazon.com: Enhanced Version NM MEMORY Card 128GB 90MB/S Nano Memory Card Nano Card only Suitable for Huawei P30/P30pro/P40/P50 series/Mate20 Series/Mate30 Series/Mate40/honor30pro magic 3/ Series Nano 128GB Card : Electronics