APKPure Appを使用する
USB mass storage (2017)の旧いバージョンをダウンロードすることが可能
The USB mass storage device class <<<<>>>>>
< is a set of computing communications protocols defined by the USB. Implementers Forum that makes a USB device accessible to a host computing device and enables file transfers
between the host and the USB device.
To a host: the USB device acts as an external hard drive: the protocol set interfaces with a number of storage devices.
OTG TOO