Instruction Manual

Guilin Feiyu Electronic Technology Co., Ltd
Guilin Feiyu Electronic Technology Co., Ltd http://www.feiyudz.cn [e-mail]
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2) Restart the computer and make the drive be activated.
3) If it can't be used, please uninstall the original drive and reinstall this one, or search its
PL2303 chip to the latest version on the Internet.
Step Two: confirm the USB-TTL Virtual serial number (take Win XP for example)
1) Insert the USB-TTL interface cable into computer USB COM port(don‘t connect TTL port
to any other wire ) , you will find there is more than one port(COM and LPT), the
port―COM2‖in the ―Prolific USB-to-Serial Com Port (COM2)‖ exactly is the Virtual serial
number.
If you do not know which COM port number, do the following:
Click your control panel: Click on system: Hardware, click Device Manager:
Check the COM Port number for Prolific USB-to-Serial Com Port:
2) inserter a few times for confirmation
3) Modify the serial number if necessary
Note COM number.