diff --git a/wled00/data/settings_leds.htm b/wled00/data/settings_leds.htm
index 677c382e..6d7c36c9 100644
--- a/wled00/data/settings_leds.htm
+++ b/wled00/data/settings_leds.htm
@@ -397,9 +397,9 @@ ${i+1}:
 <option value="5">GBR</option>
 </select></div>
 <div id="dig${i}w" style="display:none">Swap: <select name="WO${i}"><option value="0">None</option><option value="1">W & B</option><option value="2">W & G</option><option value="3">W & R</option></select></div>
-<div id="dig${i}l" style="display:none">Clock: <select name="SP${i}"><option value="0">Slowest</option><option value="1">Slow</option><option value="2">Normal</option><option value="3">Fast</option><option value="4">Fastest</option></select></div>
+<div id="dig${i}l" style="display:none">Clock: <select name="SP${i}"><option value="0">Slowest</option><option value="1">Slow</option><option value="2">Normal</option><option value="3">Fast</option><option value="4">Fastest</option><option value="5">MAX</option><option value="6">overspeed</option></select></div>
 <div>
-<span id="psd${i}">Start:</span> <input type="number" name="LS${i}" id="ls${i}" class="l starts" min="0" max="8191" value="${lastEnd(i)}" oninput="startsDirty[${i}]=true;UI();" required />&nbsp;
+<span id="psd${i}">Start:</span> <input type="number" name="LS${i}" id="ls${i}" class="l starts" min="0" max="8464" value="${lastEnd(i)}" oninput="startsDirty[${i}]=true;UI();" required />&nbsp;
 <div id="dig${i}c" style="display:inline">Length: <input type="number" name="LC${i}" class="l" min="1" max="${maxPB}" value="1" required oninput="UI()" /></div><br>
 </div>
 <span id="p0d${i}">GPIO:</span> <input type="number" name="L0${i}" required class="s" onchange="UI()"/>
diff --git a/wled00/set.cpp b/wled00/set.cpp
index 31fbb784..044b6e77 100644
--- a/wled00/set.cpp
+++ b/wled00/set.cpp
@@ -159,6 +159,8 @@ void handleSettingsSet(AsyncWebServerRequest *request, byte subPage)
           case 2 : freqHz =  5000; break;
           case 3 : freqHz = 10000; break;
           case 4 : freqHz = 20000; break;
+          case 5 : freqHz = 40000; break; // WLEDMM max speed 40Mhz - requires carefull wiring
+          case 6 : freqHz = 60000; break; // WLEDMM overspeed 60Mhz - may or may not work
         }
       } else {
         freqHz = 0;
diff --git a/wled00/xml.cpp b/wled00/xml.cpp
index efc5840c..b90b7bb7 100644
--- a/wled00/xml.cpp
+++ b/wled00/xml.cpp
@@ -469,6 +469,8 @@ void getSettingsJS(AsyncWebServerRequest* request, byte subPage, char* dest) //W
           case  5000 : speed = 2; break;
           case 10000 : speed = 3; break;
           case 20000 : speed = 4; break;
+          case 40000 : speed = 5; break; // WLEDMM max speed 40Mhz - requires carefull wiring
+          case 60000 : speed = 6; break; // WLEDMM overspeed 60Mhz - may or may not work
         }
       }
       sappend('v',sp,speed);