Amazon.com: eMMC Module Reader Board for OS upgrade : Electronics
EMMC module 8GB 16GB 32GB 64GB with microSD turn eMMC adapter T2 _ - AliExpress Mobile
DEBO EMMC5.0 64: Developer boards - eMMC 5.1, 64 GB, expansion memory at reichelt elektronik
Emmc Module 8gb 16gb 32gb 64gb For Nano Pi With Micro Sd-compatible To Emmc Module Adapter T2 Embedded Multi Media Card - Demo Board Accessories - AliExpress
Memory, eMMC and micro sd Odroid Botland - Robotic Shop
eMMC to MicroSD Adapter Board for ROCK 4C+, ROCK 4SE - OKdo