Mystery Devices

Can you tell what is it for?

No, it's not the Doomsday Device launch key
from the "Dr. Strangelove" movie :)

SOLUTION:

This is a USB self-destruct switch, also known as the "USB Data Shredder".
Thanks to T, here is a link,
and I found another page with a few more pics:

"Despite the skull and crossbones that cover the bright red button at the center of this Self Destruction USB Hub and give it the aura of impending doom if you get anywhere near that button, the device is actually just a four-port USB hub. But in those moments in front of your computer when you lose a ton of work, get fired via email, or slow processing simply breaks the camel's back, sometimes a resource for even merely mimicking your own self-destruction can provide relief. You'll be happy when you wake up the next morning that it wasn't real."

More wacky USB devices: Link 1, Link 2