diff --git a/README.md b/README.md
index 4e37389..b5af62e 100644
--- a/README.md
+++ b/README.md
@@ -98,6 +98,18 @@ ### Running the script via SSH
 
 <p align="leftr"><img src="images/syno_hdd_db.png"></p>
 
+### vendor_ids.txt
+
+If DSM doesn't know the brand of your NVMe drives they will show up in Storage Manager as Unknown brand, and Unrecognised firmware version.
+
+<p align="leftr"><img src="images/unknown.png"></p>
+
+In this case the script will show you the vendor ID and advise you to add it to the syno_hdd_vendor_ids.txt file.
+
+<p align="leftr"><img src="images/vendor_vid.png"></p>
+
+<br>
+
 **Credits**
 
 - The idea for this script came from a comment made by Empyrealist on the Synology subreddit.