diff --git a/wled00/bus_manager.cpp b/wled00/bus_manager.cpp
index 34c39f86a6..57670b26ce 100644
--- a/wled00/bus_manager.cpp
+++ b/wled00/bus_manager.cpp
@@ -636,7 +636,7 @@ BusHub75Matrix::BusHub75Matrix(BusConfig &bc) : Bus(bc.type, bc.start, bc.autoWh
       mxconfig.mx_width = 64;
       mxconfig.mx_height = 64;
       break;
-    case 104: // untested
+    case 104:
       mxconfig.mx_width = 128;
       mxconfig.mx_height = 64;
       break;
@@ -952,25 +952,25 @@ BusHub75Matrix::BusHub75Matrix(BusConfig &bc) : Bus(bc.type, bc.start, bc.autoWh
   switch(bc.type) {
     case 105:
       USER_PRINTLN("MatrixPanel_I2S_DMA FOUR_SCAN_32PX_HIGH - 32x32");
-      if (!fourScanPanel) fourScanPanel = new VirtualMatrixPanel((*display), 1, 1, 32, 32);
+      if (!fourScanPanel) fourScanPanel = new VirtualMatrixPanel((*display), 1, mxconfig.chain_length, 32, 32);
       fourScanPanel->setPhysicalPanelScanRate(FOUR_SCAN_32PX_HIGH);
       fourScanPanel->setRotation(0);
       break;
     case 106:
       USER_PRINTLN("MatrixPanel_I2S_DMA FOUR_SCAN_32PX_HIGH - 64x32");
-      if (!fourScanPanel) fourScanPanel = new VirtualMatrixPanel((*display), 1, 1, 64, 32);
+      if (!fourScanPanel) fourScanPanel = new VirtualMatrixPanel((*display), 1, mxconfig.chain_length, 64, 32);
       fourScanPanel->setPhysicalPanelScanRate(FOUR_SCAN_32PX_HIGH);
       fourScanPanel->setRotation(0);
       break;
     case 107:
       USER_PRINTLN("MatrixPanel_I2S_DMA FOUR_SCAN_64PX_HIGH");
-      if (!fourScanPanel) fourScanPanel = new VirtualMatrixPanel((*display), 1, 1, 64, 64);
+      if (!fourScanPanel) fourScanPanel = new VirtualMatrixPanel((*display), 1, mxconfig.chain_length, 64, 64);
       fourScanPanel->setPhysicalPanelScanRate(FOUR_SCAN_64PX_HIGH);
       fourScanPanel->setRotation(0);
       break;
     case 108: // untested
       USER_PRINTLN("MatrixPanel_I2S_DMA 128x64 FOUR_SCAN_64PX_HIGH");
-      if (!fourScanPanel) fourScanPanel = new VirtualMatrixPanel((*display), 1, 1, 128, 64);
+      if (!fourScanPanel) fourScanPanel = new VirtualMatrixPanel((*display), 1, mxconfig.chain_length, 128, 64);
       fourScanPanel->setPhysicalPanelScanRate(FOUR_SCAN_64PX_HIGH);
       fourScanPanel->setRotation(0);
       break;