You can get a Khadas Vim Pro which has very similar hardware. And like the C2 it's one of the few ARM dev boards that has partial mainline Linux kernel support.

You can get a Khadas Vim Pro which has very similar hardware. And like the C2 it's one of the few ARM dev boards that has partial mainline Linux kernel support. It has opensource Mali drivers thanks to BayLibre, but some outstanding issues with USB unfortunately. (the Khadas team is really small so unfortunately progress is slow :( )