USB Implementers Forum, Thunderbolt 3 has been effectively implemented in the USB4 specification—with compatibility with Thunderbolt 3 optional but encouraged for USB4 products. Interoperability Various protocol converters are available that convert USB data signals to and from other communications standards. Security threats Due to the prevalency of the USB standard, there are many exploits using the USB standard. One of the biggest instances of this today is known as the USB Killer, a device which damages devices by sending high voltage pulses across the data lines. In versions of Microsoft Windows before Windows XP, Windows would automatically run a script (if present) on certain devices via autorun, one of which are USB mass storage devices, which may contain malicious software. See also USB USB hardware USB protocol USB-C USB hub Extensible Host Controller Interface (XHCI) List of device bit rates#Peripheral WebUSB Derived and related standards DockPort Windows Easy Transfer LIO Target Media Transfer Protocol Mobile High-Definition Link Thunderbolt (interface) References Further reading External links General overview Technical documents IEC 62680 (Universal Serial Bus interfaces for data and power): IEC 62680-1.1:2015 - Part 1-1: Common components - USB Battery Charging Specification, Revision 1.2 IEC 62680-1-2:2018 - Part 1-2: Common components - USB Power Delivery specification IEC 62680-1-3:2018 - Part 1-3: Common components - USB Type-C Cable and Connector Specification IEC 62680-1-4:2018 - Part 1-4: Common components - USB Type-C Authentication Specification IEC 62680-2-1:2015 - Part 2-1: Universal Serial Bus Specification, Revision 2.0 IEC 62680-2-2:2015 - Part 2-2: Micro-USB Cables and Connectors Specification, Revision 1.01 IEC 62680-2-3:2015 - Part 2-3: Universal Serial Bus Cables and Connectors Class Document Revision 2.0 IEC 62680-3-1:2017 - Part 3-1: Universal Serial Bus 3.1 Specification American inventions Computer buses Computer connectors Computer-related introductions in 1996 Japanese inventions Physical layer protocols Serial buses