diff --git a/wled00/data/settings_um.htm b/wled00/data/settings_um.htm
index d0dd98f3..e6766d1f 100644
--- a/wled00/data/settings_um.htm
+++ b/wled00/data/settings_um.htm
@@ -269,6 +269,8 @@
 					// console.log("pinPost option", c, c.value, d.ro_gpio.includes(c.value));
 					for (let j=0; j<d.ro_gpio.length; j++) if (d.ro_gpio[j] == c.value) c.text += " read only 🟠"; //if (d.ro_gpio.includes(c.value)) not working ???
 					for (let j=0; j<d.rsvd.length; j++) if (d.rsvd[j] == c.value) {c.text += " reserved 🟣"; c.disabled=true;} //now always disabled as post is done last if (d.rsvd.includes(c.value))
+					for (let j=0; j<d.h_pins.length; j++) if (d.h_pins[j] == c.value && c.text.length <= 4) {c.text += " HUB75 🔴"; c.disabled=true;} // HUB75 pins
+					for (let j=0; j<d.x_pins.length; j++) if (d.x_pins[j] == c.value && c.text.length <= 4) {c.text += " DMX   🔴"; c.disabled=true;} // DMX pins
 					//remove pins > max_gpio
 					if (c.value > d.max_gpio) {
 						select.removeChild(c);
diff --git a/wled00/xml.cpp b/wled00/xml.cpp
index 71f3340f..8abb6ee6 100644
--- a/wled00/xml.cpp
+++ b/wled00/xml.cpp
@@ -287,6 +287,30 @@ void appendGPIOinfo() {
   char a_pins[64]  = { '\0' }; // fix warning: output 45 bytes into a destination of size 30
   snprintf(a_pins, 64, "d.a_pins=[%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d];", pinManager.getADCPin(PM_ADC1, 0), pinManager.getADCPin(PM_ADC1, 1), pinManager.getADCPin(PM_ADC1, 2), pinManager.getADCPin(PM_ADC1, 3), pinManager.getADCPin(PM_ADC1, 4), pinManager.getADCPin(PM_ADC1, 5), pinManager.getADCPin(PM_ADC1, 6), pinManager.getADCPin(PM_ADC1, 7), pinManager.getADCPin(PM_ADC1, 8), pinManager.getADCPin(PM_ADC1, 9), pinManager.getADCPin(PM_ADC1, 10));
   oappend(a_pins);
+
+  // WLEDMM add HUB75 pins, as they are not stored directly in cfg.json
+  strcpy(ro_gpio, "d.h_pins=["); // WLEDMM we re-use this array, instead of creating an addition one; 140 bytes is more than enough for 14 pins.
+  bool isFirstHub = true;
+  for(int pinNr = 0; pinNr < WLED_NUM_PINS; pinNr++) {
+    if ((pinManager.isPinOk(pinNr)) && (pinManager.getPinOwner(pinNr) == PinOwner::HUB75)) {
+      sprintf(pinString, "%s%d", isFirstHub?"":",", pinNr);
+      strcat(ro_gpio, pinString); isFirstHub = false;
+    }
+  }
+  oappend(ro_gpio);
+  oappend(SET_F("];"));
+
+  // WLEDMM same procedure for DMX pins
+  strcpy(ro_gpio, "d.x_pins=["); // WLEDMM we re-use this array, instead of creating an addition one; 140 bytes is more than enough for max 4 pins.
+  isFirstHub = true;
+  for(int pinNr = 0; pinNr < WLED_NUM_PINS; pinNr++) {
+    if ((pinManager.isPinOk(pinNr)) && (pinManager.getPinOwner(pinNr) == PinOwner::DMX || pinManager.getPinOwner(pinNr) == PinOwner::DMX_INPUT)) {
+      sprintf(pinString, "%s%d", isFirstHub?"":",", pinNr);
+      strcat(ro_gpio, pinString); isFirstHub = false;
+    }
+  }
+  oappend(ro_gpio);
+  oappend(SET_F("];"));
 }
 
 //get values for settings form in javascript