diff --git a/library.properties b/library.properties
index 17ab006..632d396 100644
--- a/library.properties
+++ b/library.properties
@@ -1,8 +1,8 @@
 name=Dynamixel2Arduino
-version=0.6.2
+version=0.6.3
 author=ROBOTIS
 license=Apache-2.0
-maintainer=Will Son(willson@robotis.com)
+maintainer=HongHyun Kim(khh@robotis.com)
 sentence=DYNAMIXEL protocol Library for Arduino
 paragraph=This library helps the Arduino boards to communicate with DYNAMIXEL protocol.
 category=Communication
diff --git a/src/utility/port_handler.cpp b/src/utility/port_handler.cpp
index b20bcad..690395c 100644
--- a/src/utility/port_handler.cpp
+++ b/src/utility/port_handler.cpp
@@ -39,14 +39,14 @@ void SerialPortHandler::begin(unsigned long baud)
   if(port_ == Serial1 && getOpenState() == false){
     pinMode(BDPIN_DXL_PWR_EN, OUTPUT);
     digitalWrite(BDPIN_DXL_PWR_EN, HIGH);
-    delay(300); // Wait for the FET to turn on.
+    delay(500); // Wait for the FET to turn on.
   }
 #elif defined(ARDUINO_OpenCR)
   if(port_ == Serial3 && getOpenState() == false){
     pinMode(BDPIN_DXL_PWR_EN, OUTPUT);
     digitalWrite(BDPIN_DXL_PWR_EN, HIGH);
   }
-  delay(300); // Wait for the DYNAMIXEL to power up normally.
+  delay(500); // Wait for the DYNAMIXEL to power up normally.
 #endif
 
   baud_ = baud;