diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,3 +1,11 @@
 # apgen
 
-Arduino Passkey Generator
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+Arduino Passkey Generator
+
+Passkey generator for Arduino devices 
+
+Tested on BadUSB Beetle / Arduino Micro (ATMEGA32U4)
+
+https://www.amazon.com/HiLetgo-Microcontroller-ATMEGA32U4-Development-Keyboard/dp/B07W5K9YHP
+
+https://www.amazon.com/Arduino-Micro-Headers-A000053-Controller/dp/B00AFY2S56
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