diff --git a/files/etc/radios.json b/files/etc/radios.json
index 2241b27a..09d22fc2 100644
--- a/files/etc/radios.json
+++ b/files/etc/radios.json
@@ -805,6 +805,15 @@
       "usechains"       : true,
       "rfband"          : "5800ubntus"
     },
+    "0xe5e5" : {
+      "name"            : "Ubiquiti PowerBeam M5 300-ISO",
+      "comment"         : "",
+      "supported"       : "1",
+      "maxpower"        : "22",
+      "pwroffset"       : "4",
+      "usechains"       : true,
+      "rfband"          : "5800ubntus"
+    },
     "0xe6e5" : {
       "name"            : "Ubiquiti PowerBeam M5 400-ISO",
       "comment"         : "",