Usb to serial controller driver is a usb drive, turn the com for connection to the router switches may need to speak to, there are two pieces of software, including plc_2003 (how) I tested on Windows xp, you can use to another without verification, to restart after the installation, if you even on a single chip microcomputer, prompt lack ser2pl. Sys file, in the installation package 98 me_20011_2kxp_20024 directory with the file, remember, come into force after the restart, even on a single chip microcomputer automatic identification,