To buy a al computer transmission computer line 1.GPW-CB03 and then install the driver, 2 after the installation of the system will give a COM address 3, such as COM1,..COM4 and so on, the 4 opened 5 new programming software - transfer - set COM on this position as long as the computer as 6 as computer system is COM4 7 programming the software also should set COM4, full rate will be the same, otherwise it will not even.