Boox Note won't turn on

I just got my Boox Note from Amazon US. Coming out of the box, the device won't turn on. So I figured it's just not charged. I plugged it into my PC to charge, and the charging LED is flashing blue and magenta instead of the steady orange the manual says. I've waited for an hour and the LED is still flashing and won't turn on.

Did I get a broken device? Or is there something else I should try?