I’m sorry to have to say that it’s a software issue, and currently normal. Thank you for asking so politely!
To power it up again, unplug the power cord, wait a handful of seconds, and plug it back in.
Neon OS is still having an issue with the fan resuming operation some time after shutdown. @NeonDaniel has been working on it, and the “fan to 100%” function is deeply embedded, so it hasn’t been an easy fix.
Did you mean, you already purchased your SSD, or that your Mark II arrived with a USB instead? One of those I can help fix with a coupon.