diff --git a/mesh.proto b/mesh.proto
index ded38b0..14d1bc6 100644
--- a/mesh.proto
+++ b/mesh.proto
@@ -246,6 +246,10 @@ enum HardwareModel {
    * RAK WisBlock ESP32 core: https://docs.rakwireless.com/Product-Categories/WisBlock/RAK11200/Overview/
    */
   RAK11200 = 40;
+  /*
+   * Reserved ID For developing private Ports. These will show up in live traffic sparsely, so we can use a high number. Keep it within 8 bits.
+   */
+  PRIVATE_HW = 255;
 }
 
 /*