diff --git a/microbit/src/03-setup/macos.md b/microbit/src/03-setup/macos.md
index 8ddc83aa..ac42e27e 100644
--- a/microbit/src/03-setup/macos.md
+++ b/microbit/src/03-setup/macos.md
@@ -10,6 +10,9 @@ $ brew install arm-none-eabi-gdb
 
 $ # Minicom
 $ brew install minicom
+
+$ # lsusb (list connected USB devices)
+$ brew install lsusb
 ```
 
 That's all! Go to the [next section].