diff --git a/SPI_M0/SPI_M0.ino b/SPI_M0/SPI_M0.ino
new file mode 100644
index 0000000..95c2b6e
--- /dev/null
+++ b/SPI_M0/SPI_M0.ino
@@ -0,0 +1,9 @@
+void setup() {
+  // put your setup code here, to run once:
+
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+
+}
diff --git a/arduino vers web/WebServer/WebServer.ino b/arduino vers web/WebServer/WebServer.ino
index 314c6fa..4c79418 100644
--- a/arduino vers web/WebServer/WebServer.ino	
+++ b/arduino vers web/WebServer/WebServer.ino	
@@ -15,17 +15,13 @@ EthernetServer server(80);
 
 void setup() {
   // Open serial communications and wait for port to open:
-  Serial.begin(9600);
-  while (!Serial) {
-    ; // wait for serial port to connect. Needed for native USB port only
-  }
-
+  SerialUSB.begin(9600);
 
   // start the Ethernet connection and the server:
   Ethernet.begin(mac, ip);
   server.begin();
-  Serial.print("server is at ");
-  Serial.println(Ethernet.localIP());
+  SerialUSB.print("server is at ");
+  SerialUSB.println(Ethernet.localIP());
 }
 
 
@@ -33,13 +29,13 @@ void loop() {
   // listen for incoming clients
   EthernetClient client = server.available();
   if (client) {
-    Serial.println("new client");
+    SerialUSB.println("new client");
     // an http request ends with a blank line
     boolean currentLineIsBlank = true;
     while (client.connected()) {
       if (client.available()) {
         char c = client.read();
-        Serial.write(c);
+        SerialUSB.write(c);
         // if you've gotten to the end of the line (received a newline
         // character) and the line is blank, the http request has ended,
         // so you can send a reply