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https://olimex.wordpress.com/2016/07/05/a64-olinuxino-update-the-rev-b-design-will-be-possible-to-produce-in-industrial-grade-4085c-dual-voltage-emmc-3-31-8v/
A64-OLinuXino update, the Rev.B design will be possible to produce in industrial grade -40+85C, dual voltage eMMC 3.3/1.8V