diff --git a/QtScrcpy/adb/adbprocess.cpp b/QtScrcpy/adb/adbprocess.cpp
index 72f6126..a3f088b 100644
--- a/QtScrcpy/adb/adbprocess.cpp
+++ b/QtScrcpy/adb/adbprocess.cpp
@@ -65,17 +65,8 @@ void AdbProcess::initSignals()
 
     connect(this, &QProcess::readyReadStandardOutput, this,
             [this](){
-        QString stdOut = QString::fromLocal8Bit(readAllStandardOutput());
-
-        // get devices serial by adb devices
-        QStringList serials;
-        QStringList devicesInfoList = stdOut.split(QRegExp("\r\n|\n"), QString::SkipEmptyParts);
-        for(QString deviceInfo : devicesInfoList) {
-            QStringList deviceInfos = deviceInfo.split(QRegExp("\t"), QString::SkipEmptyParts);
-            if (2 == deviceInfos.count() && 0 == deviceInfos[1].compare("device")) {
-                serials << deviceInfos[0];
-            }
-        }
+        m_standardOutput = QString::fromLocal8Bit(readAllStandardOutput());
+        qDebug() << m_standardOutput;
     });
 
     connect(this, &QProcess::started, this,
@@ -86,6 +77,7 @@ void AdbProcess::initSignals()
 
 void AdbProcess::execute(const QString& serial, const QStringList& args)
 {
+    m_standardOutput = "";
     QStringList adbArgs;
     if (!serial.isEmpty()) {
         adbArgs << "-s" << serial;
@@ -112,6 +104,20 @@ void AdbProcess::setShowTouchesEnabled(const QString &serial, bool enabled)
     execute(serial, adbArgs);
 }
 
+QStringList AdbProcess::getDevicesSerialFromStdOut()
+{
+    // get devices serial by adb devices
+    QStringList serials;
+    QStringList devicesInfoList = m_standardOutput.split(QRegExp("\r\n|\n"), QString::SkipEmptyParts);
+    for(QString deviceInfo : devicesInfoList) {
+        QStringList deviceInfos = deviceInfo.split(QRegExp("\t"), QString::SkipEmptyParts);
+        if (2 == deviceInfos.count() && 0 == deviceInfos[1].compare("device")) {
+            serials << deviceInfos[0];
+        }
+    }
+    return serials;
+}
+
 void AdbProcess::forward(const QString& serial, quint16 localPort, const QString& deviceSocketName)
 {
     QStringList adbArgs;
diff --git a/QtScrcpy/adb/adbprocess.h b/QtScrcpy/adb/adbprocess.h
index f891816..4f393c0 100644
--- a/QtScrcpy/adb/adbprocess.h
+++ b/QtScrcpy/adb/adbprocess.h
@@ -29,6 +29,7 @@ public:
     void removePath(const QString& serial, const QString& path);
     bool isRuning();
     void setShowTouchesEnabled(const QString& serial, bool enabled);
+    QStringList getDevicesSerialFromStdOut();
 
     static const QString& getAdbPath();
 
@@ -38,6 +39,8 @@ signals:
 private:
     void initSignals();
 
+private:
+    QString m_standardOutput = "";
     static QString s_adbPath;
 };
 
diff --git a/QtScrcpy/dialog.cpp b/QtScrcpy/dialog.cpp
index 0ebe23f..998e2c7 100644
--- a/QtScrcpy/dialog.cpp
+++ b/QtScrcpy/dialog.cpp
@@ -21,10 +21,13 @@ Dialog::~Dialog()
     delete ui;
 }
 
-void Dialog::on_adbProcess_clicked()
+void Dialog::on_updateDevice_clicked()
 {
     AdbProcess* adb = new AdbProcess();
-    connect(adb, &AdbProcess::adbProcessResult, this, [this](AdbProcess::ADB_EXEC_RESULT processResult){
+    connect(adb, &AdbProcess::adbProcessResult, this, [this, adb](AdbProcess::ADB_EXEC_RESULT processResult){
+        if (AdbProcess::AER_SUCCESS_EXEC == processResult) {
+            qDebug() << adb->getDevicesSerialFromStdOut().join("*");
+        }
         if (AdbProcess::AER_SUCCESS_START != processResult) {
             sender()->deleteLater();
         }
diff --git a/QtScrcpy/dialog.h b/QtScrcpy/dialog.h
index d61f600..f6f300b 100644
--- a/QtScrcpy/dialog.h
+++ b/QtScrcpy/dialog.h
@@ -20,7 +20,7 @@ public:
     ~Dialog();
 
 private slots:
-    void on_adbProcess_clicked();
+    void on_updateDevice_clicked();
 
     void on_startServerBtn_clicked();
 
diff --git a/QtScrcpy/dialog.ui b/QtScrcpy/dialog.ui
index e992565..3530fc0 100644
--- a/QtScrcpy/dialog.ui
+++ b/QtScrcpy/dialog.ui
@@ -30,23 +30,23 @@
      </property>
      <layout class="QHBoxLayout" name="horizontalLayout">
       <item>
-       <widget class="QPushButton" name="adbProcess">
+       <widget class="QPushButton" name="updateDevice">
         <property name="text">
-         <string>adbProcess</string>
+         <string>update device</string>
         </property>
        </widget>
       </item>
       <item>
        <widget class="QPushButton" name="startServerBtn">
         <property name="text">
-         <string>startServer</string>
+         <string>start server</string>
         </property>
        </widget>
       </item>
       <item>
        <widget class="QPushButton" name="stopServerBtn">
         <property name="text">
-         <string>stopServer</string>
+         <string>stop server</string>
         </property>
        </widget>
       </item>