Yeah it seems it has the same pin out, i power arduino externally with 12 V because i use that for opamps also.
I don't connect it to usb port and because it seemed to be a nano clone i thought it was original 
i programmed it with an original UNO from ICSP to be quick, making the usb communication work is time consuming. It has no boot loader also. I believe the code runs ok because of the output when i see when i do not connect by the optocoupler.