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 :
What is Nano Memory and where is it headed? - Android Authority
Xiwai USB-C Type C/USB 2.0 to NM Nano Memory Card & TF Micro SD Card Reader for Huawei Cell Phone & Laptop Card Readers - Newegg.com
CY NM Nano Huawei Memory Card & TF Micro SD to USB-C Type C USB 2.0 Card Reader | eBay
Huawei Nano Memory (NM) Card Reader - YouTube
Official Huawei Micro SD / Nano Memory Card Reader With USB C - White
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 Mate 20 series uses a new nano memory card that fits in a nano SIM slot : r/Android