USB-IF
USB-IF is the acronym for Universal Serial Bus Implementers Forum.

Universal Serial Bus Implementers Forum
A non-profit organization created to promote and support the Universal Serial Bus (USB) standard. The USB-IF facilitates the development of high-quality compatible USB devices through its logo and compliance program, and it promotes the benefits of USB and the quality of products that have passed its compliance testing.
Members of the USB-IF consist of companies that span the computing and consumer electronics industries. Part of their work also involves defining specifications for each new version of USB, maintaining the USB standard, and providing a framework for the testing and certification of USB devices.
- Abbreviation: USB-IF