Prolific Usb To Serial Driver Windows

Sep 12, 2017 As suggested in the post, we have tried with no avail to get a USB to Serial adapter to work since Windows 10 1703 update. We bought the FTDI adapter as suggested, updated the driver for the prolific as suggested, tried to switch to Microsoft USB to Serial, only to blue screen the machine.

Prolific Usb To Serial Driver Windows Xp
Prolific Usb To Serial Driver Windows 10
Prolific Usb To Serial Driver Windows 8

Prolific Usb To Serial Driver Windows Xp

This package supports the following driver models:Prolific USB-to-Serial Comm Port.
I tried downloading the most current driver, I ran the automated troubleshooting service, but nothing allowed the computer to recognize the Prolific USB to Serial adapter. What I did to overcome this was to 'roll back' my driver to the 3.3.3.114 dated 2009. I did an internet search for this driver, downloaded the driver and installed the driver.
Unplug the USB-To-Serial adapter and run the “PL2303DriverInstaller.exe” again, following the directions precisely until the correct driver appears in the Device Manager. Removal: The Prolific 32-bit PL-2303DriverInstaller is a “Program” file and therefore installed to your computer and must stay.
Now Includes Windows 8.1 and Windows 10! Download this driver for installing and fixing of prolific usb to serial driver windows 10 code 10. U will get such kind of errors when you try to install pl2303 drivers in win 8 and win 10.

Scan performed on 4/25/2017, Computer: NEC PC-VJ20ERZE1 - Windows 7 64 bit

Outdated or Corrupted drivers:5/21

Device/Driver	Status	Status Description	Updated By Scanner
Motherboards
Intel(R) 82801G (ICH7 Family) USB Universal Host Controller - 27C8	Up To Date and Functioning
Mice And Touchpads
KYE HID mouse	Up To Date and Functioning
Microsoft Microsoft USB IntelliMouse	Corrupted By Prolific Usb To Serial Comm Port (com3)
A4Tech HID-compliant mouse	Corrupted By Prolific Usb To Serial Comm Port (com3)
Usb Devices
Intel Xeon(R) processor E3-1200 v2/3rd Gen Core processor DRAM Controller - 0150	Up To Date and Functioning
Sound Cards And Media Devices
Toshiba TOSHIBA USB ISDB-T and ISDB-S TV Tuner(x64)	Corrupted By Prolific Usb To Serial Comm Port (com3)
AMD ATI Function Driver for High Definition Audio - ATI AA01	Up To Date and Functioning
AnalogDevices SoundMAX Integrated Digital HD Audio	Up To Date and Functioning
Network Cards
Ralink Belkin 54g Wireless USB Network Adapter	Up To Date and Functioning
Keyboards
Microsoft HID Keyboard	Corrupted By Prolific Usb To Serial Comm Port (com3)
Hard Disk Controller
ALi Coporation ALi M5229 PCI-Bus-Master-IDE-Controller	Up To Date and Functioning
Others
AuthenTec Biometric Coprocessor	Up To Date and Functioning
NEC Texas Instruments PCIxx12 Cardbus Controller	Up To Date and Functioning
Intel Intel(r) AIM External TV Encoder Driver 5	Up To Date and Functioning
Toshiba Toshiba Secure Digital-Hostcontroller	Up To Date and Functioning
Cameras, Webcams And Scanners
SunplusIT HD Webcam	Up To Date and Functioning
Video Cards
Intel Standard VGA Graphics Adapter	Up To Date and Functioning
Input Devices
Microsoft HID-compliant system control device	Up To Date and Functioning
Port Devices
PROLiNK PROLiNK Diagnostics Device (COM8)	Up To Date and Functioning
Monitors
Sony Digital Flat Panel (1024x768)	Outdated
Mobile Phones And Portable Devices
Acer NOKIA	Up To Date and Functioning

There are a number of Prolific Serial drivers and these have been listed below. There is also an explanation here (USB to RS232 Driver) which also uses a Prolific USB driver. If the Prolific USB to serial drivers below do not work then see the USB to RS232 driver for more information as it uses more than one option.

There is also an installation diagram ( FT232R USB UART Driver) which shows how to install and remove USB drivers on your computer. Note that we have updated the Prolific driver for the Prolific USB to serial driver which you now download below for Windows XP/7/8/10 listed below.

Install the Prolific USB to Serial driver on Windows

Double-click the PL-2303 Windows Driver Installer program;
The Prolific driver will ask you to install the PL-2303 USB-to-Serial driver will be installed on your computer;
The PL-2303 Driver Installer program will now install the Prolific drivers;
Now close the installer program when it is installed.

Check the Prolific USB to Serial driver on Windows

Check the driver check for the “Prolific USB-to-Serial Comm Port” device in Device Manager;

Check the “Prolific USB-to-Serial Comm Port” driver version by right-clicking on the Prolific Port and then click on “driver” on the top to check the driver version that you have on your computer. The Prolific USB to Serial Driver date will show below as is shown on the picture below.

Error 10 on the Prolific USB to Serial driver

If you get an error that the Prolific USB to Serial Adapter is not working then you will need to uninstall the driver on your computer and remove the Prolific USB to Serial adpater from your computer. Report and connect the Prolific adapter again and then wait until it looks for the Prolific USB to Serial driver. Direct the software to where you extracted the driver to and install the Prolific driver from there.

Advanced Settings on the Prolific USB to Serial driver

You can change the port settings on the Prolific USB to Serial Adapter settings as shown below. You will need to click on the port options on the top of the menu and then click on the advanced options which holds the advanced port options on the Prolific adapter as shown below.

Note what each of these advanced port settings does as shown below:

USB Selective Suspend Idle Timer

This is the Idle Timer for the PL2303 chip to enter suspend mode and the default for this is 10 seconds. You can change this on the Prolific USB to serial adapter. Check your chip as this does not work on the PL2303SA chip. Also note that for the PL2303HXD/EA/RA, you need to write to OTPROM first.

Disable DTR/RTS INIT signal

By default this is enabled. This will disable the DTR/RTS pin initialisation signal during driver load to disable the serial mouse or modem from being detected. Check this setting if your Prolific USB driver is not detecting your serial modem or serial mouse. The Prolific USB to Serial Adapter normally has this enabled as stated before, however for troubleshooting it is always best to check the advanced settings.

Change DTR/RTS INIT Level Shift

The signal needs to be enabled as the default for this setting is TTL=HIGH as well as RS232=LOW.

Disable Device USB Serial Number in Windows Registry

This is very important if you have many devices. The default for this settings is enabled. If you check this it will ignore PL2303 device Serial Numbers. If you disabled this then each PL2303 device even with different USB serial numbers will be treated as same device. This is more for troubleshooting your serial devices.

Driver Buffer Size

This will set the buffer size of the serial device. The default settings for this is 4096.

Prolific USB to Serial Driver Download

(For PL2303 HXA, XA, HXD, EA, RA, SA, TA, TB versions)
Installer version & Build date: 1.10.0 (2014-09-25)