Programer is not responding

hello,
arduino noob here. have arduino 1 blinking since plugged in. ive tried run blink code , fade code keep getting errors.

code: [select]

arduino: 1.8.0 (mac os x), board: "arduino/genuino uno"

sketch uses 1150 bytes (3%) of program storage space. maximum 32256 bytes.
global variables use 13 bytes (0%) of dynamic memory, leaving 2035 bytes local variables. maximum 2048 bytes.
/applications/arduino.app/contents/java/hardware/tools/avr/bin/avrdude -c/applications/arduino.app/contents/java/hardware/tools/avr/etc/avrdude.conf -v -patmega328p -carduino -p/dev/cu.usbmodem5d11 -b115200 -d -uflash:w:/var/folders/t1/yhpwb_9d71d9d3nq59blcq5r0000gn/t/arduino_build_36317/fade.ino.hex:i

avrdude: version 6.3, compiled on dec 16 2016 @ 13:32:25
         copyright (c) 2000-2005 brian dean, http://www.bdmicro.com/
         copyright (c) 2007-2014 joerg wunsch

         system wide configuration file "/applications/arduino.app/contents/java/hardware/tools/avr/etc/avrdude.conf"
         user configuration file "/users/local-admin/.avrduderc"
         user configuration file not exist or not regular file, skipping

         using port                    : /dev/cu.usbmodem5d11
         using programmer              : arduino
         overriding baud rate          : 115200
avrdude: ser_open(): can't open device "/dev/cu.usbmodem5d11": no such file or directory

avrdude done.  thank you.

problem uploading board.  see http://www.arduino.cc/en/guide/troubleshooting#upload suggestions.

this report have more information with
"show verbose output during compilation"
option enabled in file -> preferences.



sos.
 

either need driver board (potentially clone ch340) or selected wrong communication port on mac. com port on macs called "dev/cu.usbserial-..." arduino connected to.
if don't see comport, mac cannot detect arduino being plugged in driver missing or usb cable not ok.

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