diff --git a/README.md b/README.md
index c0bf4e54e26912eab445be184b4df1f143455d35..7a952b03e8c55ccea689292b82ab70696f29b6a3 100644
--- a/README.md
+++ b/README.md
@@ -4,3 +4,12 @@ A print server for the documento document management system
 ## Features
 - Prints info papers on any ESCPOS-compatible printer (optimised for 58mm)
 - Prints barcodes label on special barcode printers using CUPS (downloads PDF from server)
+
+
+## Setup udev
+
+- `sudo cp 99-escpos.rules /etc/udev/rules.d/99-escpos.rules`
+- Add user to group `dialout`
+- Restart udev `sudo service udev restart` (In some new systems it is done with `sudo udevadm control --reload`)
+
+