I understand that each port has a circuit-breaker which can be reset (by unplugging everything and powering it off and on again, or something like that).

EDIT: Apologies, it looks like they used to use fuses before they switched to resettable circuit breakers. Here's a Reddit post where somebody shares an (excellent IMHO) customer service email from Anker on the issue: https://m.reddit.com/r/perktv/comments/2fd00z/anker_dead_por...