From fb32d6108736227cf19cc7a225652fa9a456155f Mon Sep 17 00:00:00 2001
From: Duncan Finney <duncan.finney@gmail.com>
Date: Mon, 18 Nov 2024 06:13:17 -0700
Subject: [PATCH] docs: add additional command for debugging vendor and product
 ids on OSX

---
 README.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/README.md b/README.md
index c405a84..71bdf87 100644
--- a/README.md
+++ b/README.md
@@ -116,6 +116,13 @@ $ opendiff a b
 ```
 In the command output, the highlighted lines show you which USB IDs are most relevant.
 
+
+For a full list of USB devices:
+```
+system_profiler SPUSBDataType
+```
+**Important**: The format for your display-switch.ini is VendorID:ProductID. VendorID is displyed *second* in the `system_profiler` output
+
 #### Linux
 Requires additional packages, install via: `sudo apt install libxi-dev xorg-dev`