... 3) 7 inch display LCD 4) ATC function and USB Communication ADT-CNC4620 low cost two axis lathe CNC system ... Additional function: support external handheld bos operation, additional panel, USB disk, USB communication.It is a brand-new design. ADTECH especially ... and servo driver,and realize high performance ratio 7 with USB ,Flash and RS232 COM communication etc,. lots of kinds communication mode ...