diff --git a/wled00/data/index.js b/wled00/data/index.js
index 31726f40..4744fb38 100644
--- a/wled00/data/index.js
+++ b/wled00/data/index.js
@@ -702,7 +702,7 @@ ${i.psram?inforow("PSRAM ☾",((i.tpram-i.psram)/1024).toFixed(0)+"/"+(i.tpram/1
 ${i.psusedram?inforow("Max used PSRAM ☾",((i.tpram-i.psusedram)/1024).toFixed(0)+" kB",", "+((i.tpram-i.psusedram)*100.0/i.tpram).toFixed(1)+"%"):""} 
 ${i.freestack?inforow("Free stack ☾",(i.freestack/1000).toFixed(3)," kB"):""} <!--WLEDMM-->
 <tr><td colspan=2><hr style="height:1px;border-width:0;color:SeaGreen;background-color:SeaGreen"></td></tr>
-${i.tpram?inforow("PSRAM ☾",(i.tpram/1024/1024).toFixed(0)," MB"):""}
+${i.tpram?inforow("PSRAM " + (i.psrmode?"("+i.psrmode+" mode) ":"") + " ☾",(i.tpram/1024/1024).toFixed(0)," MB"):""}
 ${i.e32flash?inforow("Flash mode "+i.e32flashmode+i.e32flashtext + " ☾",i.e32flash+" MB, "+i.e32flashspeed," Mhz"):""}
 ${i.e32model?inforow(i.e32model + " ☾",i.e32cores +" core(s),"," "+i.e32speed+" Mhz"):""}
 ${inforow("Environment",i.arch + " " + i.core + " (" + i.lwip + ")")}
diff --git a/wled00/json.cpp b/wled00/json.cpp
index 64254963..c03a61f0 100644
--- a/wled00/json.cpp
+++ b/wled00/json.cpp
@@ -1066,6 +1066,13 @@ void serializeInfo(JsonObject root)
     root[F("tpram")] = ESP.getPsramSize(); //WLEDMM
     root[F("psram")] = ESP.getFreePsram();
     root[F("psusedram")] = ESP.getMinFreePsram();
+    #if CONFIG_ESP32S3_SPIRAM_SUPPORT  // WLEDMM -S3 has "qspi" or "opi" PSRAM mode
+    #if CONFIG_SPIRAM_MODE_OCT
+      root[F("psrmode")]  = F("🚀 OPI");
+    #elif CONFIG_SPIRAM_MODE_QUAD
+      root[F("psrmode")]  = F("qspi 🛻");
+    #endif
+    #endif
   }
   #else
   // for testing