As reported by Toms Hardware and other news sources, a new company in Hong Kong is selling a USB-frying unit called “USB Killer 2.0”, and a “USB Killer Test Shield”.
http://www.tomshardware.com/news/usb-killer-2.0-power-surge-attack,32669.html
https://www.usbkill.com/usb-killer/8-usb-killer.html
https://www.usbkill.com/blog/usb-kill-behind-the-scenes-b40.html
“Temporarily Out of Stock.”