On the side of the drive is a physical, tactile red button. Pressing it once initiates a backup of your smartphone’s camera roll (via the companion app) or your SD card if inserted via a USB hub. It runs on an internal capacitor, meaning you can back up a card without plugging the drive into a computer at all.
To ensure you are getting the highest quality "portable" versions and supporting the creator: mercedes ambrus photo portable
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Here is a look at the enduring appeal of Mercedes Ambrus and how to curate a portable photo collection in the digital age. On the side of the drive is a physical, tactile red button