Huawei 128GB NM (Nano Memory) Card – Overview Being up to 45% smaller than existing microSD cards, and the same size as a Nano SIM card. A Huawei 128GB NM card is the perfect way to increase the storage of your Huawei smartphone. The Dual slot on the Huawei Mate 20, Mate 20 Pro and Mate 20 X all support this new standard. Ensuring it is easy to chooses between a second SIM card, or an NM card for extra storage. Up to 90MB/s transfer speeds are possible with this new type of card. Offering enhanced performance when interacting with large files. Reasons to buy Huawei 128GB NM (Nano Memory) Card Up to 45% smaller than existing MicroSD cards Transfer speeds of up to 90MB/s Ideal for Huawei Mate 20, Mate 20 Pro & Mate 20 X Storage capacity – 128GB