This is the RS232 driver for the USB adapter. In order to setup the driver you need to download the correct USB driver file and run the installer in the file. Once this has been installed you then need to reboot the computer. Once this is done plug the USB into the adapter.
Common Problems:
'This came from the driver CD that came with a cheap CH341 based USB to Serial adapter that had numerous other drivers on the CD as well. This is the correct driver for the serial adapter, and it includes drivers for Windows 7 x64. It also seems to have drivers for Windows 98, 2000, XP, 2003, Vista, and.' HL-340 usb to serial adapter Driver. スマートI/O Serial / Parallel PL2303 Windows Driver Download. For Prolific USB VID067B&PID2303 and PID2304 Only. Prolific advices end-users to only purchase vendor branded cable products with company name contact.
Windows 2000:
Right-click on the “Prolific USB to Serial Port”, then click Properties.
Now click on “Port Settings”. Then click the “Advanced” button.
Always uncheck “Use automatic settings”.
Now select “Input/Output range”. Click on the “Change Settings” option.
Type “02E8-02EF” in the Value box. This value will change the port to COM 4.
If COM 4 is in use, you must choose another port. The values for each port are.
COM 1: 03F8-03FF
COM 2: 02F8-02FF
COM 3: 03E8-03EF
COM 4: 02E8-02EF
Enter the value, then click OK. Click OK again, then click Yes when the “Creating a Forced Configuration” window appears. Click OK.
Windows Generic:
If you are having problems then check if you have installed the driver correctly. This is done by doing the following on your computer to check the installation. If the USB driver has been properly installed, “Serialio.com USB Serial Port” or “Prolific USB-to-Serial COM Port” will be displayed.
Windows Vista: Start >> Control Panel >> System >> Hardware >> Device Manager
USB to RS232 Driver Download (Windows 7/Vista – 32bit and 64bit)
USB to RS232 Driver Download (Windows 7/Vista/2000 – 32bit and 64bit)
USB to RS232 Driver Download (Windows 7/Vista/XP -32-bit)
USB to RS232 Driver (Windows 7/Vista/XP – 32-bit and 64-bit : Alternate)
You can also find the latest UART driver located here if this does not work.
How to install and setup RS 232 on Ubuntu FT232R USB UART
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USB to RS232 Driver, 6.7 out of 10 based on 128 ratings