About rxtx.org

rxtx.org exists to answer one question quickly: what is this USB device? You ran lsusb, read a kernel log, or opened Device Manager, and got back four hex digits and no name. This site turns that code into a manufacturer, a model, and instructions for confirming it on your own machine.

Where the data comes from

Every record is derived from usb.ids, the community-maintained list hosted at linux-usb.org and shipped with most Linux distributions. We parse the file, normalise vendors, devices and interface entries into a relational database, and rebuild the index weekly. Each device page shows the raw source line it was generated from so you can verify it yourself.

What it is not

• Not an official USB-IF registry — that data is not published in full.
• Not a driver download site. We only link to manufacturer support pages we know.
• Not exhaustive. Counterfeit, prototype and white-label hardware often reuses or invents IDs that were never registered.

Tools

Beyond single lookups, there is an lsusb output parser and a Windows hardware ID parser for decoding a whole block of output at once. If you are new to USB identifiers, start with how USB IDs work.