diff --git a/build/shared/examples/01.Basics/AnalogReadSerial/AnalogReadSerial.ino b/build/shared/examples/01.Basics/AnalogReadSerial/AnalogReadSerial.ino
index 1dc462aace5..53b3cd33230 100644
--- a/build/shared/examples/01.Basics/AnalogReadSerial/AnalogReadSerial.ino
+++ b/build/shared/examples/01.Basics/AnalogReadSerial/AnalogReadSerial.ino
@@ -11,6 +11,11 @@
 void setup() {
   // initialize serial communication at 9600 bits per second:
   Serial.begin(9600);
+  // wait for Serial port initialization.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial) ;
 }
 
 // the loop routine runs over and over again forever:
diff --git a/build/shared/examples/01.Basics/DigitalReadSerial/DigitalReadSerial.ino b/build/shared/examples/01.Basics/DigitalReadSerial/DigitalReadSerial.ino
index 115b4c18c51..6756d124567 100644
--- a/build/shared/examples/01.Basics/DigitalReadSerial/DigitalReadSerial.ino
+++ b/build/shared/examples/01.Basics/DigitalReadSerial/DigitalReadSerial.ino
@@ -12,6 +12,11 @@ int pushButton = 2;
 void setup() {
   // initialize serial communication at 9600 bits per second:
   Serial.begin(9600);
+  // wait for Serial port initialization.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial) ;
   // make the pushbutton's pin an input:
   pinMode(pushButton, INPUT);
 }
diff --git a/build/shared/examples/01.Basics/ReadAnalogVoltage/ReadAnalogVoltage.ino b/build/shared/examples/01.Basics/ReadAnalogVoltage/ReadAnalogVoltage.ino
index 1e2e4eda83e..0293b6b31af 100644
--- a/build/shared/examples/01.Basics/ReadAnalogVoltage/ReadAnalogVoltage.ino
+++ b/build/shared/examples/01.Basics/ReadAnalogVoltage/ReadAnalogVoltage.ino
@@ -11,6 +11,11 @@
 void setup() {
   // initialize serial communication at 9600 bits per second:
   Serial.begin(9600);
+  // wait for Serial port initialization.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial) ;
 }
 
 // the loop routine runs over and over again forever:
diff --git a/build/shared/examples/02.Digital/DigitalInputPullup/DigitalInputPullup.ino b/build/shared/examples/02.Digital/DigitalInputPullup/DigitalInputPullup.ino
index 7d9276b407b..732aa243064 100644
--- a/build/shared/examples/02.Digital/DigitalInputPullup/DigitalInputPullup.ino
+++ b/build/shared/examples/02.Digital/DigitalInputPullup/DigitalInputPullup.ino
@@ -24,6 +24,11 @@
 void setup() {
   //start serial connection
   Serial.begin(9600);
+  // wait for Serial port initialization.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial) ;
   //configure pin2 as an input and enable the internal pull-up resistor
   pinMode(2, INPUT_PULLUP);
   pinMode(13, OUTPUT);
diff --git a/build/shared/examples/02.Digital/StateChangeDetection/StateChangeDetection.ino b/build/shared/examples/02.Digital/StateChangeDetection/StateChangeDetection.ino
index 3e2f3b36508..d3c9dac0b32 100644
--- a/build/shared/examples/02.Digital/StateChangeDetection/StateChangeDetection.ino
+++ b/build/shared/examples/02.Digital/StateChangeDetection/StateChangeDetection.ino
@@ -41,6 +41,11 @@ void setup() {
   pinMode(ledPin, OUTPUT);
   // initialize serial communication:
   Serial.begin(9600);
+  // wait for Serial port initialization.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial) ;
 }
 
 
diff --git a/build/shared/examples/02.Digital/tonePitchFollower/tonePitchFollower.ino b/build/shared/examples/02.Digital/tonePitchFollower/tonePitchFollower.ino
index 28c780d89a8..971c9b25b6d 100644
--- a/build/shared/examples/02.Digital/tonePitchFollower/tonePitchFollower.ino
+++ b/build/shared/examples/02.Digital/tonePitchFollower/tonePitchFollower.ino
@@ -22,6 +22,11 @@ This example code is in the public domain.
 void setup() {
   // initialize serial communications (for debugging only):
   Serial.begin(9600);
+  // wait for Serial port initialization.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial) ;
 }
 
 void loop() {
diff --git a/build/shared/examples/03.Analog/AnalogInOutSerial/AnalogInOutSerial.ino b/build/shared/examples/03.Analog/AnalogInOutSerial/AnalogInOutSerial.ino
index 60c52ee9e51..34e54b1717b 100644
--- a/build/shared/examples/03.Analog/AnalogInOutSerial/AnalogInOutSerial.ino
+++ b/build/shared/examples/03.Analog/AnalogInOutSerial/AnalogInOutSerial.ino
@@ -30,6 +30,11 @@ int outputValue = 0;        // value output to the PWM (analog out)
 void setup() {
   // initialize serial communications at 9600 bps:
   Serial.begin(9600);
+  // wait for Serial port initialization.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial) ;
 }
 
 void loop() {
diff --git a/build/shared/examples/03.Analog/Smoothing/Smoothing.ino b/build/shared/examples/03.Analog/Smoothing/Smoothing.ino
index 9a79c9caafa..70a1cef881e 100644
--- a/build/shared/examples/03.Analog/Smoothing/Smoothing.ino
+++ b/build/shared/examples/03.Analog/Smoothing/Smoothing.ino
@@ -37,6 +37,11 @@ int inputPin = A0;
 void setup() {
   // initialize serial communication with computer:
   Serial.begin(9600);
+  // wait for Serial port initialization.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial) ;
   // initialize all the readings to 0:
   for (int thisReading = 0; thisReading < numReadings; thisReading++) {
     readings[thisReading] = 0;
diff --git a/build/shared/examples/04.Communication/Dimmer/Dimmer.ino b/build/shared/examples/04.Communication/Dimmer/Dimmer.ino
index ef0e084de75..f3cc02a6bf8 100644
--- a/build/shared/examples/04.Communication/Dimmer/Dimmer.ino
+++ b/build/shared/examples/04.Communication/Dimmer/Dimmer.ino
@@ -26,6 +26,11 @@ const int ledPin = 9;      // the pin that the LED is attached to
 void setup() {
   // initialize the serial communication:
   Serial.begin(9600);
+  // wait for Serial port initialization.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial) ;
   // initialize the ledPin as an output:
   pinMode(ledPin, OUTPUT);
 }
diff --git a/build/shared/examples/04.Communication/Graph/Graph.ino b/build/shared/examples/04.Communication/Graph/Graph.ino
index db812e03449..24d45782321 100644
--- a/build/shared/examples/04.Communication/Graph/Graph.ino
+++ b/build/shared/examples/04.Communication/Graph/Graph.ino
@@ -29,6 +29,11 @@
 void setup() {
   // initialize the serial communication:
   Serial.begin(9600);
+  // wait for Serial port initialization.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial) ;
 }
 
 void loop() {
diff --git a/build/shared/examples/04.Communication/Midi/Midi.ino b/build/shared/examples/04.Communication/Midi/Midi.ino
index e4de8ccb78e..e91da934bf0 100644
--- a/build/shared/examples/04.Communication/Midi/Midi.ino
+++ b/build/shared/examples/04.Communication/Midi/Midi.ino
@@ -25,6 +25,11 @@
 void setup() {
   //  Set MIDI baud rate:
   Serial.begin(31250);
+  // wait for Serial port initialization.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial) ;
 }
 
 void loop() {
diff --git a/build/shared/examples/04.Communication/MultiSerial/MultiSerial.ino b/build/shared/examples/04.Communication/MultiSerial/MultiSerial.ino
index ea9fa2eb212..8ffa42759b3 100644
--- a/build/shared/examples/04.Communication/MultiSerial/MultiSerial.ino
+++ b/build/shared/examples/04.Communication/MultiSerial/MultiSerial.ino
@@ -25,6 +25,11 @@ void setup() {
   // initialize both serial ports:
   Serial.begin(9600);
   Serial1.begin(9600);
+  // wait for Serial and Serial1 ports initialization.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial && !Serial1) ;
 }
 
 void loop() {
diff --git a/build/shared/examples/04.Communication/PhysicalPixel/PhysicalPixel.ino b/build/shared/examples/04.Communication/PhysicalPixel/PhysicalPixel.ino
index 25556af5688..c8390118fdb 100644
--- a/build/shared/examples/04.Communication/PhysicalPixel/PhysicalPixel.ino
+++ b/build/shared/examples/04.Communication/PhysicalPixel/PhysicalPixel.ino
@@ -29,6 +29,11 @@ int incomingByte;      // a variable to read incoming serial data into
 void setup() {
   // initialize serial communication:
   Serial.begin(9600);
+  // wait for Serial port initialization.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial) ;
   // initialize the LED pin as an output:
   pinMode(ledPin, OUTPUT);
 }
diff --git a/build/shared/examples/04.Communication/ReadASCIIString/ReadASCIIString.ino b/build/shared/examples/04.Communication/ReadASCIIString/ReadASCIIString.ino
index 074c9c78976..a106db4565e 100644
--- a/build/shared/examples/04.Communication/ReadASCIIString/ReadASCIIString.ino
+++ b/build/shared/examples/04.Communication/ReadASCIIString/ReadASCIIString.ino
@@ -26,8 +26,13 @@ const int greenPin = 5;
 const int bluePin = 6;
 
 void setup() {
-  // initialize serial:
+  // start serial comunication
   Serial.begin(9600);
+  // wait for Serial port initialization.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial) ;
   // make the pins outputs:
   pinMode(redPin, OUTPUT);
   pinMode(greenPin, OUTPUT);
diff --git a/build/shared/examples/04.Communication/SerialEvent/SerialEvent.ino b/build/shared/examples/04.Communication/SerialEvent/SerialEvent.ino
index cbaaf88f37b..842f8cdbf5d 100644
--- a/build/shared/examples/04.Communication/SerialEvent/SerialEvent.ino
+++ b/build/shared/examples/04.Communication/SerialEvent/SerialEvent.ino
@@ -23,6 +23,11 @@ boolean stringComplete = false;  // whether the string is complete
 void setup() {
   // initialize serial:
   Serial.begin(9600);
+  // wait for Serial port initialization.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial) ;
   // reserve 200 bytes for the inputString:
   inputString.reserve(200);
 }
diff --git a/build/shared/examples/04.Communication/SerialPassthrough/SerialPassthrough.ino b/build/shared/examples/04.Communication/SerialPassthrough/SerialPassthrough.ino
index 5650abbaf4d..f7d88f749b4 100644
--- a/build/shared/examples/04.Communication/SerialPassthrough/SerialPassthrough.ino
+++ b/build/shared/examples/04.Communication/SerialPassthrough/SerialPassthrough.ino
@@ -26,6 +26,11 @@
 void setup() {
   Serial.begin(9600);
   Serial1.begin(9600);
+  // wait for Serial and Serial1 ports initialization.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial && !Serial1) ;
 }
 
 void loop() {
diff --git a/build/shared/examples/04.Communication/VirtualColorMixer/VirtualColorMixer.ino b/build/shared/examples/04.Communication/VirtualColorMixer/VirtualColorMixer.ino
index b9a6df1da0e..6ec7aeb3a13 100644
--- a/build/shared/examples/04.Communication/VirtualColorMixer/VirtualColorMixer.ino
+++ b/build/shared/examples/04.Communication/VirtualColorMixer/VirtualColorMixer.ino
@@ -22,6 +22,11 @@ const int bluePin = A2;		// sensor to control blue color
 
 void setup() {
   Serial.begin(9600);
+  // wait for Serial port initialization.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial) ;
 }
 
 void loop() {
diff --git a/build/shared/examples/06.Sensors/ADXL3xx/ADXL3xx.ino b/build/shared/examples/06.Sensors/ADXL3xx/ADXL3xx.ino
index 2515d60a09c..c0211e1c7be 100644
--- a/build/shared/examples/06.Sensors/ADXL3xx/ADXL3xx.ino
+++ b/build/shared/examples/06.Sensors/ADXL3xx/ADXL3xx.ino
@@ -36,6 +36,11 @@ const int zpin = A1;                  // z-axis (only on 3-axis models)
 void setup() {
   // initialize the serial communications:
   Serial.begin(9600);
+  // wait for Serial port to connect
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial) ;
 
   // Provide ground and power by using the analog inputs as normal
   // digital pins.  This makes it possible to directly connect the
diff --git a/build/shared/examples/06.Sensors/Knock/Knock.ino b/build/shared/examples/06.Sensors/Knock/Knock.ino
index 98c64ffb00c..fd7d94fefc3 100644
--- a/build/shared/examples/06.Sensors/Knock/Knock.ino
+++ b/build/shared/examples/06.Sensors/Knock/Knock.ino
@@ -35,6 +35,11 @@ int ledState = LOW;         // variable used to store the last LED status, to to
 void setup() {
   pinMode(ledPin, OUTPUT); // declare the ledPin as as OUTPUT
   Serial.begin(9600);       // use the serial port
+  // wait for Serial port initialization.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial) ;
 }
 
 void loop() {
diff --git a/build/shared/examples/06.Sensors/Memsic2125/Memsic2125.ino b/build/shared/examples/06.Sensors/Memsic2125/Memsic2125.ino
index 74c504bb831..c39348186e0 100644
--- a/build/shared/examples/06.Sensors/Memsic2125/Memsic2125.ino
+++ b/build/shared/examples/06.Sensors/Memsic2125/Memsic2125.ino
@@ -28,8 +28,13 @@ const int xPin = 2;		// X output of the accelerometer
 const int yPin = 3;		// Y output of the accelerometer
 
 void setup() {
-  // initialize serial communications:
+  // initialize serial communication:
   Serial.begin(9600);
+  // wait for Serial port to connect.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial) ;
   // initialize the pins connected to the accelerometer
   // as inputs:
   pinMode(xPin, INPUT);
diff --git a/build/shared/examples/06.Sensors/Ping/Ping.ino b/build/shared/examples/06.Sensors/Ping/Ping.ino
index ab0cb899cd8..ad1dc806aa4 100644
--- a/build/shared/examples/06.Sensors/Ping/Ping.ino
+++ b/build/shared/examples/06.Sensors/Ping/Ping.ino
@@ -29,6 +29,11 @@ const int pingPin = 7;
 void setup() {
   // initialize serial communication:
   Serial.begin(9600);
+  // wait for Serial port to connect.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial) ;
 }
 
 void loop() {
diff --git a/build/shared/examples/09.USB/Keyboard/KeyboardSerial/KeyboardSerial.ino b/build/shared/examples/09.USB/Keyboard/KeyboardSerial/KeyboardSerial.ino
index a3310f7cc84..2ba99dff52d 100644
--- a/build/shared/examples/09.USB/Keyboard/KeyboardSerial/KeyboardSerial.ino
+++ b/build/shared/examples/09.USB/Keyboard/KeyboardSerial/KeyboardSerial.ino
@@ -24,6 +24,11 @@
 void setup() {
   // open the serial port:
   Serial.begin(9600);
+  // wait for Serial port initialization.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial) ;
   // initialize control over the keyboard:
   Keyboard.begin();
 }
diff --git a/build/shared/examples/09.USB/KeyboardAndMouseControl/KeyboardAndMouseControl.ino b/build/shared/examples/09.USB/KeyboardAndMouseControl/KeyboardAndMouseControl.ino
index f14df1d0fa9..3b5bc9541b2 100644
--- a/build/shared/examples/09.USB/KeyboardAndMouseControl/KeyboardAndMouseControl.ino
+++ b/build/shared/examples/09.USB/KeyboardAndMouseControl/KeyboardAndMouseControl.ino
@@ -39,6 +39,11 @@ void setup() { // initialize the buttons' inputs:
   pinMode(mouseButton, INPUT);
 
   Serial.begin(9600);
+  // wait for Serial port initialization.
+  // Needed for boards that use native USB port such as
+  // ATMEGA32U4 based boards, Arduino/Genuino 101,
+  // Arduino Due and Arduino/Genuino Zero (Native Port)
+  while(!Serial) ;
   // initialize mouse control:
   Mouse.begin();
   Keyboard.begin();