diff --git a/companion/src/firmwares/edgetx/yaml_generalsettings.cpp b/companion/src/firmwares/edgetx/yaml_generalsettings.cpp
index b61b8c91d..1920d0f22 100644
--- a/companion/src/firmwares/edgetx/yaml_generalsettings.cpp
+++ b/companion/src/firmwares/edgetx/yaml_generalsettings.cpp
@@ -214,9 +214,10 @@ Node convert<GeneralSettings>::encode(const GeneralSettings& rhs)
 
   Node serialPort;
   for (int i = 0; i < GeneralSettings::SP_COUNT; i++) {
-    if (rhs.serialPort[i] != UART_MODE_NONE) {
+    if (rhs.serialPort[i] != GeneralSettings::AUX_SERIAL_OFF) {
       Node mode = uartModeLut << rhs.serialPort[i];
       serialPort[LookupValue(serialPortLut, i)]["mode"] = mode;
+      serialPort[LookupValue(serialPortLut, i)]["power"] = (int)rhs.serialPower[i];
     }
   }
   if (serialPort && serialPort.IsMap())
@@ -421,13 +422,17 @@ bool convert<GeneralSettings>::decode(const Node& node, GeneralSettings& rhs)
         YAML::Node port_nr = port.first >> serialPortLut;
         if (port_nr) {
           int p = port_nr.as<int>();
-          if (p >= 0 && p < GeneralSettings::SP_COUNT && port.second.IsMap())
+          if (p >= 0 && p < GeneralSettings::SP_COUNT && port.second.IsMap()) {
             port.second["mode"] >> uartModeLut >> rhs.serialPort[p];
+            int pwr = port.second["power"].as<int>();
+            if (pwr >= 0 && pwr <= 1)
+              port.second["power"] >> rhs.serialPower[p];
+          }
         }
       }
     }
   }
-  
+
   node["antennaMode"] >> antennaModeLut >> rhs.antennaMode;
   node["backlightColor"] >> rhs.backlightColor;
   node["pwrOnSpeed"] >> rhs.pwrOnSpeed;
diff --git a/companion/src/firmwares/eeprominterface.h b/companion/src/firmwares/eeprominterface.h
index 22abfde3f..890ef7495 100644
--- a/companion/src/firmwares/eeprominterface.h
+++ b/companion/src/firmwares/eeprominterface.h
@@ -168,7 +168,8 @@ enum Capability {
   TopBarZones,
   HasModelsList,
   HasFlySkyGimbals,
-  RotaryEncoderNavigation
+  RotaryEncoderNavigation,
+  HasSoftwareSerialPower
 };
 
 class EEPROMInterface
diff --git a/companion/src/firmwares/generalsettings.h b/companion/src/firmwares/generalsettings.h
index 3da7d996e..3ca8c1e3f 100644
--- a/companion/src/firmwares/generalsettings.h
+++ b/companion/src/firmwares/generalsettings.h
@@ -243,6 +243,7 @@ class GeneralSettings {
     unsigned int mavbaud;
     unsigned int switchUnlockStates;
     unsigned int serialPort[SP_COUNT];
+    bool serialPower[SP_COUNT];
     int antennaMode;
     unsigned int backlightColor;
     CustomFunctionData customFn[CPN_MAX_SPECIAL_FUNCTIONS];
diff --git a/companion/src/firmwares/opentx/opentxinterface.cpp b/companion/src/firmwares/opentx/opentxinterface.cpp
index bab62bac1..e8f28ed2f 100644
--- a/companion/src/firmwares/opentx/opentxinterface.cpp
+++ b/companion/src/firmwares/opentx/opentxinterface.cpp
@@ -772,6 +772,8 @@ int OpenTxFirmware::getCapability(::Capability capability)
               IS_TARANIS_X9LITE(board) || IS_RADIOMASTER_TX12(board) ||
               IS_RADIOMASTER_ZORRO(board) || IS_RADIOMASTER_TX16S(board) ||
               IS_JUMPER_T18(board));
+    case HasSoftwareSerialPower:
+      return IS_RADIOMASTER_TX16S(board);
     default:
       return 0;
   }
diff --git a/companion/src/generaledit/hardware.cpp b/companion/src/generaledit/hardware.cpp
index 5403392a1..c0136980b 100644
--- a/companion/src/generaledit/hardware.cpp
+++ b/companion/src/generaledit/hardware.cpp
@@ -219,32 +219,46 @@ HardwarePanel::HardwarePanel(QWidget * parent, GeneralSettings & generalSettings
   ExclusiveComboGroup *exclGroup = new ExclusiveComboGroup(
       this, [=](const QVariant &value) { return value == 0; });
 
+  addSection(tr("Serial port"), row);
+
   if (firmware->getCapability(HasAuxSerialMode)) {
-    QString lbl = "Serial Port";
-    if (IS_RADIOMASTER_TX16S(board))
-      lbl.append(" (TTL)");
+    QString lbl = "AUX1";
     addLabel(tr("%1").arg(lbl), row, 0);
     AutoComboBox *serialPortMode = new AutoComboBox(this);
     serialPortMode->setModel(editorItemModels->getItemModel(auxmodelid));
     serialPortMode->setField(generalSettings.serialPort[GeneralSettings::SP_AUX1]);
     exclGroup->addCombo(serialPortMode);
-    addParams(row, serialPortMode);
+
+    AutoCheckBox *serialPortPower = new AutoCheckBox(this);
+    serialPortPower->setField(generalSettings.serialPower[GeneralSettings::SP_AUX1], this);
+    serialPortPower->setText(tr("Power"));
+
+    addParams(row, serialPortMode, serialPortPower);
+
+    if (!firmware->getCapability(HasSoftwareSerialPower))
+      serialPortPower->setVisible(false);
   }
 
   if (firmware->getCapability(HasAux2SerialMode)) {
-    QString lbl = "Serial Port 2";
-    if (IS_RADIOMASTER_TX16S(board))
-      lbl.append(" (TTL)");
+    QString lbl = "AUX2";
     addLabel(tr("%1").arg(lbl), row, 0);
     AutoComboBox *serialPortMode = new AutoComboBox(this);
     serialPortMode->setModel(editorItemModels->getItemModel(auxmodelid));
     serialPortMode->setField(generalSettings.serialPort[GeneralSettings::SP_AUX2]);
     exclGroup->addCombo(serialPortMode);
-    addParams(row, serialPortMode);
+
+    AutoCheckBox *serialPortPower = new AutoCheckBox(this);
+    serialPortPower->setField(generalSettings.serialPower[GeneralSettings::SP_AUX2], this);
+    serialPortPower->setText(tr("Power"));
+
+    addParams(row, serialPortMode, serialPortPower);
+
+    if (!firmware->getCapability(HasSoftwareSerialPower))
+      serialPortPower->setVisible(false);
   }
 
   if (firmware->getCapability(HasVCPSerialMode)) {
-    addLabel(tr("Serial Port VCP"), row, 0);
+    addLabel(tr("VCP"), row, 0);
     AutoComboBox *serialPortMode = new AutoComboBox(this);
     serialPortMode->setModel(editorItemModels->getItemModel(vcpmodelid));
     serialPortMode->setField(generalSettings.serialPort[GeneralSettings::SP_VCP]);