Utility, Driver, and Documentation Package
The USB drivers for Windows, Linux and MAC OS X can be downloaded as part of a utility and documentation package from the SEGGER web site.
Find the "J-Link Software & Documentation Pack" for your operating system and click the "Download" button. In addition to the USB drivers, full documentation and several utilities will also be downloaded and installed. The particular utilities depend upon which OS you are using.
Run the downloaded executable file to install the USB drivers, documents, and utilities.