problem uploading to board

can help me anyone?

Arduino: 1.6.5 (Windows 7), Board: “Arduino Ethernet”

Sketch uses 450 bytes (1%) of program storage space. Maximum is 32,256 bytes.

Global variables use 9 bytes (0%) of dynamic memory, leaving 2,039 bytes for local variables. Maximum is 2,048 bytes.

avrdude: ser_open(): can’t open device “\.\COM6”: The system cannot find the file specified.

Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.

This report would have more information with
“Show verbose output during compilation”
enabled in File > Preferences.

Make sure the correct port is selected in IDE and/or check the serial port in device manager if it exists and its driver is working correctly.