Huawei's Nano Memory Cards are replacing microSD on its latest phones - The Verge

Alongside the slate of new phones Huawei announced today was an interesting addition: a new type of expandable storage the company is calling Nano Memory (NM), which replaces the traditional microSD card in the newly announced Mate 20 and Mate 20 Pro.

What is Nano Memory and where is it headed? - Android Authority

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Nano Memory - Wikipedia

The New Nano Memory Card Included in Huawei's Mate 20 Phones

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Huawei's NM cards try to shrink down the micro-SD for some reason

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Nexus 6 - Wikipedia

Buy 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

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