diff --git a/gdb-server-launcher.py b/gdb-server-launcher.py
index 029db58..6abcb65 100644
--- a/gdb-server-launcher.py
+++ b/gdb-server-launcher.py
@@ -92,7 +92,8 @@ def signal_handler(sig, frame):
      settings.GDB_SERVER_PORT, 
      settings.GDB_SWO_PORT, 
      settings.GDB_SERVER_PATH, 
-     settings.STLINK_PROG_DIR], 
+     settings.STLINK_PROG_DIR,
+     settings.APID], 
     shell=False)
 
 # Start the dummy port. Will exit when the GDB server exits.
diff --git a/img/debug_conf_1.png b/img/debug_conf_1.png
index 5f76ec8..bfe7687 100644
Binary files a/img/debug_conf_1.png and b/img/debug_conf_1.png differ
diff --git a/run_stlink_gdb_server.bat b/run_stlink_gdb_server.bat
index 3fe88cf..823535e 100644
--- a/run_stlink_gdb_server.bat
+++ b/run_stlink_gdb_server.bat
@@ -13,6 +13,9 @@ echo   GDB_SERVER_PATH: %GDB_SERVER_PATH%
 set STLINK_PROG_DIR=%4%
 echo   STLINK_PROG_DIR: %STLINK_PROG_DIR%
 
+set APID=%5%
+echo   APID: %APID%
+
 %GDB_SERVER_PATH% ^
 --port-number %GDB_PORT% ^
 --swd ^
@@ -21,4 +24,4 @@ echo   STLINK_PROG_DIR: %STLINK_PROG_DIR%
 --attach ^
 --verbose ^
 -cp %STLINK_PROG_DIR% ^
--m 0
\ No newline at end of file
+-m %APID%
\ No newline at end of file
diff --git a/run_stlink_gdb_server.sh b/run_stlink_gdb_server.sh
index 75b01d8..7b50491 100755
--- a/run_stlink_gdb_server.sh
+++ b/run_stlink_gdb_server.sh
@@ -14,6 +14,9 @@ echo "  GDB_SERVER_PATH: ${GDB_SERVER_PATH}"
 export STLINK_PROG_DIR=$4
 echo "  STLINK_PROG_DIR: ${STLINK_PROG_DIR}"
 
+export APID=$5
+echo "  APID: ${APID}"
+
 ${GDB_SERVER_PATH} \
 --port-number ${GDB_PORT} \
 --swd \
@@ -22,4 +25,4 @@ ${GDB_SERVER_PATH} \
 --attach \
 --verbose \
 -cp ${STLINK_PROG_DIR} \
--m 0
+-m ${APID}
diff --git a/settings.py b/settings.py
index 8d8f62d..82edfed 100644
--- a/settings.py
+++ b/settings.py
@@ -23,3 +23,7 @@
 # script. If you change this, also update the SWO port number in your Debug Configuration 
 # under "Serial Wire Viewer" settings.
 IDE_SWO_PORT = '61035'
+
+# Most target MCUs have only one access port (AP).
+# If you need to connect to a different port, you can specify it here.
+APID = '0'
\ No newline at end of file