?????? ?????????????? ?????? ??? ??? sitrak c7h ? howo t5g 46x3 ????? ??? ????? ??? ??? ????? ???? ???? ?? ??? ??? ??????. ? ??? ?? ???? ?????.The MAC address is used to specify a destination inside of a network frame and to ensure that the info is shipped to the correct device.A media accessibility Management deal with (MAC address) is a unique id