diff --git a/ClassDigitizer2Gen.cpp b/ClassDigitizer2Gen.cpp
index f8e9ac3..31ea676 100644
--- a/ClassDigitizer2Gen.cpp
+++ b/ClassDigitizer2Gen.cpp
@@ -1366,6 +1366,7 @@ bool Digitizer2Gen::LoadSettingsFromFile(const char * loadFileName){
   FILE * loadFile = fopen(settingFileName.c_str(), "r");
 
   if( loadFile ){
+    printf("Opened %s\n", settingFileName.c_str());
     char * para      = new char[100];
     char * readWrite = new char[100];
     char * idStr     = new char[100];
@@ -1433,7 +1434,7 @@ bool Digitizer2Gen::LoadSettingsFromFile(const char * loadFileName){
 
     return true;
   }else{
-    //printf("Fail to load file %s\n", loadFileName);
+    printf("Fail to opened %s\n", settingFileName.c_str());
   }
 
   return false;
diff --git a/ClassDigitizer2Gen.h b/ClassDigitizer2Gen.h
index 797e38c..fcd32a2 100644
--- a/ClassDigitizer2Gen.h
+++ b/ClassDigitizer2Gen.h
@@ -5,7 +5,7 @@
 #include <CAEN_FELib.h>
 #include <cstdlib>
 #include <string>
-#include <map>
+#include <unordered_map>
 
 #include "Hit.h"
 
@@ -66,9 +66,9 @@ class Digitizer2Gen {
     Reg VGASetting[4]; 
     Reg InputDelay[16];
 
-    std::map<std::string, int> boardMap;
-    std::map<std::string, int> LVDSMap;
-    std::map<std::string, int> chMap;
+    std::unordered_map<std::string, int> boardMap;
+    std::unordered_map<std::string, int> LVDSMap;
+    std::unordered_map<std::string, int> chMap;
 
   public:
     Digitizer2Gen();
diff --git a/digiSettingsPanel.cpp b/digiSettingsPanel.cpp
index 70b0aea..d5646db 100644
--- a/digiSettingsPanel.cpp
+++ b/digiSettingsPanel.cpp
@@ -2414,7 +2414,12 @@ void DigiSettingsPanel::SaveSettings(){
   QDir dir(digiSettingPath);
   if( !dir.exists() ) dir.mkpath(".");
 
-  QString filePath = QFileDialog::getSaveFileName(this, "Save Settings File", digiSettingPath, "Data file (*.dat);;Text files (*.txt);;All files (*.*)");
+  QString defaultFileName = "setting_" +  QString::number(digi[ID]->GetSerialNumber()) + "_" + QString::fromStdString(digi[ID]->GetFPGAType().substr(4)) + ".dat";
+
+  QString filePath = QFileDialog::getSaveFileName(this, 
+                                                  "Save Settings File", 
+                                                  QDir::toNativeSeparators(digiSettingPath + "/" + defaultFileName),  
+                                                  "Data file (*.dat);;Text files (*.txt);;All files (*.*)");
 
   if (!filePath.isEmpty()) {
 
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 92742e5..7e8554b 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -721,8 +721,8 @@ void MainWindow::OpenDigitizers(){
       readDataThread[i] = new ReadDataThread(digi[i], i, this);
       connect(readDataThread[i], &ReadDataThread::sendMsg, this, &MainWindow::LogMsg);
 
-      //*------ search for settings_XXXX.dat
-      QString settingFile = analysisPath + "/working/Settings/setting_" + QString::number(digi[i]->GetSerialNumber()) + ".dat";
+      //*------ search for settings_XXX_YYY.dat, YYY is DPP-type, XXX is serial number
+      QString settingFile = analysisPath + "/working/Settings/setting_" + QString::number(digi[i]->GetSerialNumber()) + "_" + QString::fromStdString(digi[i]->GetFPGAType().substr(4)) + ".dat";
       if( digi[i]->LoadSettingsFromFile( settingFile.toStdString().c_str() ) ){
         LogMsg("Found setting file <b>" + settingFile + "</b> and loading. please wait.");
         digi[i]->SetSettingFileName(settingFile.toStdString());