diff --git a/boards/matek/gnss-m9n-f4/nuttx-config/Kconfig b/boards/matek/gnss-m9n-f4/nuttx-config/Kconfig
deleted file mode 100644
index e991f5a766..0000000000
--- a/boards/matek/gnss-m9n-f4/nuttx-config/Kconfig
+++ /dev/null
@@ -1,23 +0,0 @@
-menu "SERIAL_PASSTHRU Configuration"
-config SERIAL_PASSTHRU_UBLOX
-	bool "Detect and Auto Connect on U-Center messages"
-	default n
-	---help---
-		This option will enable the cdc_acm_check to launch
-		The passthru driver.
-
-config SERIAL_PASSTHRU_UBLOX_DEV
-	string "Device path of the GPS"
-	depends on SERIAL_PASSTHRU_UBLOX
-	default "/dev/ttyS2"
-	---help---
-		This is the path of the device used as the right side
-		of the passthru.
-
-config SERIAL_PASSTHRU_UBLOX_BAUDRATE
-	string "baudrate"
-	depends on SERIAL_PASSTHRU_UBLOX
-	default "115200"
-	---help---
-		This option sets the baudrate for the passthru.
-endmenu
diff --git a/platforms/nuttx/src/px4/common/cdc_acm_check.cpp b/platforms/nuttx/src/px4/common/cdc_acm_check.cpp
index a2756a4d3c..ac5a24d7ff 100644
--- a/platforms/nuttx/src/px4/common/cdc_acm_check.cpp
+++ b/platforms/nuttx/src/px4/common/cdc_acm_check.cpp
@@ -50,6 +50,24 @@ __END_DECLS
 
 #define USB_DEVICE_PATH "/dev/ttyACM0"
 
+#if defined(CONFIG_SERIAL_PASSTHRU_UBLOX)
+#  undef SERIAL_PASSTHRU_UBLOX_DEV
+#  if defined(CONFIG_SERIAL_PASSTHRU_GPS1) && defined(CONFIG_BOARD_SERIAL_GPS1)
+#    define SERIAL_PASSTHRU_UBLOX_DEV CONFIG_BOARD_SERIAL_GPS1
+#  elif defined(CONFIG_SERIAL_PASSTHRU_GPS2)&& defined(CONFIG_BOARD_SERIAL_GPS2)
+#    define SERIAL_PASSTHRU_UBLOX_DEV CONFIG_BOARD_SERIAL_GPS2
+#  elif defined(CONFIG_SERIAL_PASSTHRU_GPS3)&& defined(CONFIG_BOARD_SERIAL_GPS3)
+#    define SERIAL_PASSTHRU_UBLOX_DEV CONFIG_BOARD_SERIAL_GPS3
+#  elif defined(CONFIG_SERIAL_PASSTHRU_GPS4)&& defined(CONFIG_BOARD_SERIAL_GPS4)
+#    define SERIAL_PASSTHRU_UBLOX_DEV CONFIG_BOARD_SERIAL_GPS4
+#  elif defined(CONFIG_SERIAL_PASSTHRU_GPS5) && defined(CONFIG_BOARD_SERIAL_GPS5)
+#    define SERIAL_PASSTHRU_UBLOX_DEV CONFIG_BOARD_SERIAL_GPS5
+#  endif
+#  if !defined(SERIAL_PASSTHRU_UBLOX_DEV)
+#    error "CONFIG_SERIAL_PASSTHRU_GPSn and CONFIG_BOARD_SERIAL_GPSn must be defined"
+#  endif
+#endif
+
 static struct work_s usb_serial_work;
 static bool vbus_present_prev = false;
 static int ttyacm_fd = -1;
@@ -204,7 +222,7 @@ static void mavlink_usb_check(void *arg)
 								snprintf(baudstring, sizeof(baudstring), "%d", baudrate);
 								static const char *gps_argv[] {"gps", "stop", nullptr};
 
-								static const char *passthru_argv[] {"serial_passthru", "start", "-t", "-b", baudstring, "-e", USB_DEVICE_PATH, "-d", CONFIG_SERIAL_PASSTHRU_UBLOX_DEV,   nullptr};
+								static const char *passthru_argv[] {"serial_passthru", "start", "-t", "-b", baudstring, "-e", USB_DEVICE_PATH, "-d", SERIAL_PASSTHRU_UBLOX_DEV,   nullptr};
 #endif
 								char **exec_argv = nullptr;
 
diff --git a/src/systemcmds/serial_passthru/Kconfig b/src/systemcmds/serial_passthru/Kconfig
index b91415a6f5..cfbbf9933d 100644
--- a/src/systemcmds/serial_passthru/Kconfig
+++ b/src/systemcmds/serial_passthru/Kconfig
@@ -4,3 +4,54 @@ menuconfig SYSTEMCMDS_SERIAL_PASSTHRU
 	---help---
 		Enable support for passing one sevice to another
 		i.e ttyACM to ttyS5
+
+if SYSTEMCMDS_SERIAL_PASSTHRU
+
+config SERIAL_PASSTHRU_UBLOX
+	bool "Detect and Auto Connect on U-Center messages"
+	default n
+	---help---
+		This option will enable the cdc_acm_check to launch
+		The passthru driver.
+
+#
+# GPS Passthru device selection
+#
+
+choice
+	prompt "Passthru device"
+	default SERIAL_PASSTHRU_GPS1 if BOARD_SERIAL_GPS1 != ""
+	depends on SERIAL_PASSTHRU_UBLOX
+	---help---
+		This is the GPS device used as the right side of the passthru.
+		the path is provided by BOARD_SERIAL_GPSn
+
+config SERIAL_PASSTHRU_GPS1
+	bool "GPS1"
+	depends on BOARD_SERIAL_GPS1 !=""
+
+config SERIAL_PASSTHRU_GPS2
+	bool "GPS2"
+	depends on BOARD_SERIAL_GPS2 !=""
+
+config SERIAL_PASSTHRU_GPS3
+	bool "GPS3"
+	depends on BOARD_SERIAL_GPS3 !=""
+
+config SERIAL_PASSTHRU_GPS4
+	bool "GPS4"
+	depends on BOARD_SERIAL_GPS4 !=""
+
+config SERIAL_PASSTHRU_GPS5
+	bool "GPS5"
+	depends on BOARD_SERIAL_GPS5 !=""
+endchoice
+
+config SERIAL_PASSTHRU_UBLOX_BAUDRATE
+	string "baudrate"
+	depends on SERIAL_PASSTHRU_UBLOX
+	default "115200"
+	---help---
+		This option sets the baudrate for the passthru.
+
+endif #SYSTEMCMDS_SERIAL_PASSTHRU
\ No newline at end of file