diff --git a/boards/arduino-mega2560/Makefile.include b/boards/arduino-mega2560/Makefile.include
index f8c28919ff..67afc9315b 100644
--- a/boards/arduino-mega2560/Makefile.include
+++ b/boards/arduino-mega2560/Makefile.include
@@ -25,11 +25,11 @@ ARDUINO_MEGA2560_COMPAT_WITH_CLONES ?= 1
 ifeq (1,$(ARDUINO_MEGA2560_COMPAT_WITH_CLONES))
   TTY_SELECT_CMD := $(RIOTTOOLS)/usb-serial/ttys.py \
                     --most-recent \
-                    --format path \
+                    --format path serial \
                     $(TTY_BOARD_FILTER) || \
                     $(RIOTTOOLS)/usb-serial/ttys.py \
                     --most-recent \
-                    --format path \
+                    --format path serial \
                     $(TTY_BOARD_FILTER_CLONE)
 endif
 
diff --git a/doc/doxygen/src/flashing.md b/doc/doxygen/src/flashing.md
index 46f0b8301e..298d4cd50a 100644
--- a/doc/doxygen/src/flashing.md
+++ b/doc/doxygen/src/flashing.md
@@ -478,20 +478,20 @@ In most cases, just adding a simple `TTY_BOARD_FILTER` is sufficient. If we
 however have wildly different flavors of the same board (e.g. genuine Arduino
 Mega 2560 with an ATmega16U2 and clones with a cheap USB to UART bridge) that we
 all want to support, we have to instead provide a `TTY_SELECT_CMD` that prints
-the path to the TTY and exists with `0` if a TTY was found, or that exists with
-`1` and prints nothing when no TTY was found. We can still use the `ttys.py`
-script to detect all Arduino Mega 2560 versions: We first try to detect a
-genuine Arduino Mega and fall back to selecting cheap USB UART bridges when that
-fails using the `||` shell operator:
+the path to and the serial of the TTY (separated by a space) and exists with
+`0` if a TTY was found, or that exists with `1` and prints nothing when no TTY
+was found. We can still use the `ttys.py` script to detect all Arduino Mega
+2560 versions: We first try to detect a genuine Arduino Mega and fall back to
+selecting cheap USB UART bridges when that fails using the `||` shell operator:
 
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   TTY_SELECT_CMD := $(RIOTTOOLS)/usb-serial/ttys.py \
                     --most-recent \
-                    --format path \
+                    --format path serial \
                     --vendor 'Arduino' \
                     --model-db 'Mega 2560|Mega ADK' || \
                     $(RIOTTOOLS)/usb-serial/ttys.py \
                     --most-recent \
-                    --format path \
+                    --format path serial \
                     --driver 'cp210x'
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
diff --git a/makefiles/tools/serial.inc.mk b/makefiles/tools/serial.inc.mk
index d2097afaa1..cb6e768a46 100644
--- a/makefiles/tools/serial.inc.mk
+++ b/makefiles/tools/serial.inc.mk
@@ -5,10 +5,15 @@ ifeq (1,$(MOST_RECENT_PORT))
   endif
   TTY_SELECT_CMD ?= $(RIOTTOOLS)/usb-serial/ttys.py \
                     --most-recent \
-                    --format path \
+                    --format path serial \
                     $(TTY_BOARD_FILTER)
-  PORT_DETECTED := $(shell $(TTY_SELECT_CMD) || echo 'no-tty-detected')
-  PORT ?= $(PORT_DETECTED)
+  TTY_DETECTED := $(shell $(TTY_SELECT_CMD) || echo 'no-tty-detected no-serial-detected')
+  PORT_DETECTED := $(firstword $(TTY_DETECTED))
+  PORT_SERIAL_DETECTED := $(lastword $(TTY_DETECTED))
+  PORT ?= $(firstword $(TTY_DETECTED))
+  ifeq (1,$(DEBUG_ADAPTER_ID_IS_TTY_SERIAL))
+    DEBUG_ADAPTER_ID ?= $(PORT_SERIAL_DETECTED)
+  endif
 endif
 # Otherwise, use as default the most commonly used ports on Linux and OSX
 PORT_LINUX ?= /dev/ttyACM0