USBKill is an anti-forensic kill-switch that waits for a change on your USB ports and then immediately shuts down your computer.
You can download it from the following link: https://packetstormsecurity.com/files/download/139766/usbkill-master.zip
Source: https://packetstormsecurity.com/files/139766/USBKill-Anti-Forensic-Kill-Switch.html