# How to Change the USB Name of Your Teensy on Linux

Last updated Oct 5, 2020

## # Introduction

The Teensy is a development board which is gaining quite a lot of popularity. When using many Teensy boards connected to the USB in one of your projects, it can be useful to assign a unique ID to each of them. In this way, you can identify and distinguish each board.

On the PJRC forum is full of resources explaining how to do it on Windows, but I have not found any resource on how to get a similar result on Linux. In this post, we are going to change the Teensy USB name so that it will be detected by your Linux computer.

## # Prerequisites

• A computer with Linux. I am working on Ubuntu 18.04
• A Teensy LC, 3.x or 4.x
• Teensyduino or PlatformIO installed
• Familiarity with C or Arduino development. Ideally, you already have a program that is using the USB serial communication between the Teensy and your computer. If not, you can use this sample program.
• Familiarity with the command line. In particular, you need to know how to use the cd and ls commands.

## # Step 1 - The lsusb Command

lsusb is a Linux command that is used to display all the USB peripherals connected to your computer. To test its function, open the terminal and type the command. You will get an output like this one: