USB-RS232 Serial Converter Driver Download

This Generic USB Driver can recognize most USB drive's if you are still using the Windows 98 OS. This driver has not been updated for several years, and it won't be updated. Download usb to hdmi driver for free. System Utilities downloads - Insignia USB to HDMI Adapter by Insignia and many more programs are available for instant and free download.

Windows 7 64-bit & 32-bit, Windows Vista 64-bit & 32-bit, Windows XP, Windows 2000, Windows Me, Windows 98

Important note regarding Windows 7 and Vista:
The driver MUST be installed 'as Administrator'
Right-click the downloaded EXE file and choose Run as administrator

Download the Windows installer for the USB RS-232 adaptor:
Download for Windows 7/Vista/XP (32-bit)
Download for Windows 7/Vista (32-bit and 64-bit)

If for some reason the above driver does not work, try one of the following:
Download for Windows 7/Vista/XP (32-bit and 64-bit - Alternate driver)
Download for Windows XP, 2000, 98/ME (32-bit only)

For older cables (purchased prior to October, 2010):
Download for Windows 7/Vista/XP (32-bit and 64-bit)
Download for Windows Vista (32-bit only)

Run the installer, then after rebooting, plug the USB end of the adapter into one of the USB ports on the computer.

NOTE: For Windows 7, please use RC build 7100 or RTM Final version. (Installer program will not run on early Windows 7 or Beta versions)

Check the software driver installation

1) Open the Device Manager dialog from Control Panel

Windows Vista: Start >> Control Panel >> System >> Hardware >> Device Manager
Windows XP: Start >> Control Panel >> System >> Hardware >> Device Manager
Windows 2000: Start >> Settings >> Control Panel >> System >> Hardware >> Device Manager
Windows 98/ME: Start >> Settings >> Control Panel >> System >> Device Manager

2) Click the plus sign (+) next to 'Ports'.

3) If the device is properly installed, 'Serialio.com USB Serial Port' or 'Prolific USB-to-Serial COM Port' will be displayed.

The software driver is properly installed, but the USB-RS232 adaptor does not work as expected

One of the common reasons that software may not work as expected with a USB-Serial adaptor when the devcie is properly installed, is many older programs (and even some new ones) only support a limited number of COM ports (e.g. only COM1 - COM4)

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If the USB-RS232 adapter is installed as COM5, it may need to be reassigned to COM1 - COM4 to work with some software.

The following outlines how to to reassign the COM port on Windows XP/2K/Me/98SE

Windows XP

1) Follow steps 1-3 of 'Check the software driver installation'above.

2) Right-click on the 'Prolific USB to Serial Port', then click Properties

3) Click on the 'Port Settings' tab. Click the 'Advanced' button.

4) In the 'COM Port Number' drop-down select the desired port number. For example if the software requires COM2, select COM2. Note the COM port must have '(in use)' listed next to it, if it does then another device with that name is already installed in the system. After selecting the desire port number, click 'OK.'

5) Click 'OK' again, and the device will show up as being on the same COM port that it was before (i.e., COM5), but should show up on the selected port name when the Device Manager dialog is closed and opened again.

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6) Close the Device Manager. Launch the software to use with the new COM port.

Windows 2000, Me, and 98 SE (Second Edition)

1) Follow steps 1 2 of 'Check the software driver installation'above.

2) Right-click on the 'Prolific USB to Serial Port', then click Properties.

3) Click on the 'Port Settings' tab. Click the 'Advanced' button.

4) Uncheck 'Use automatic settings'.

5) Select 'Input/Output range'. Click on 'Change Settings'.

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6) 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

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7) Enter the value, then click OK. Click OK again, then click Yes when the 'Creating a Forced Configuration' window appears. Click OK.

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8) Restart the computer. The Device Manager can be checked, to see the COM port change.

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Note: Adaptor may not be exactly as pictured above.
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