1 fix prolific usb to serial driver not working solution.
Usb serial cable driver windows 10.
When you upgrade your older windows system to the latest windows 10 or perform updates directly on windows 10 the prolific usb to serial driver also gets update and if it doesn t work with your old hardware you might have the problem.
The usb driver is missing.
Searching for new driver gets message the best driver software for your device is already installed.
So you can try to downgrade your prolific usb to serial driver.
Does anyone know of a driver that will work with win10.
Worked great in win7.
Windows driver installer setup program for pl2303 hxd sa ta tb ra gc gs gt gl ge gd gr versions installer version build date.
There is a yellow exclamation mark next to my prolific usb in device manager as shown below screenshots.
While you can t be so sure what the exact problem is there are solutions you can adopt to fix the issue once and for all.
This serial cable is a bridge that links the traditional serial db9 interface to the universal serial bus usb interface.
2 0 2 2020 05 27 windows vista 7 8 1 10 32 64 bit wdf whql driver.
Just recently upgraded to windows 10 the cable does not work properly any more.
Nearly every programming cable that is detected by windows as having a prolific chip was manufactured with an unauthorized or cloned copy of the prolific pl2303hxa chip.
I have been using a usb to serial cable for many years without problem at windows xp and windows 7 system.
Usb rs232 ftdi designs and supplies usb semiconductor devices with legacy support including royalty free drivers.
Here s how you can do it.
Updated driver for win 10.
Device manager shows it on com5 but it doesn t work.
Use the serial cable serial port and serial device in another setup to see if the problem is with the components or the setup.
Roll your prolific usb to serial driver back to an older.
The prolific usb to serial comm port shows not working properly in the system device manager.
Doesn t work in win10.
The last compatible prolific driver was v3 3 2 105 27 10 2008.
V3 8 31 0 07 30 2019 v5 0 15 0 04 06 2020 windows 10 certified whql driver th1 1507 th2 1511 rs1 1607 rs2 1703 rs3 1709 rs4 1803 rs5 1809 19h1 1903 19h2 1909 20h1 vb.
Read on to find quick fixes to resolve the problem.
The latest driver installed by windows vista 7 8 1 and 10 is not compatible with these chips.
It is easy to install.
Application areas include usb rs232 usb serial usb parallel usb docking stations and upgrades of legacy designs to usb.
Or even a corrupted driver.
Use a different serial cable serial port and serial device in your setup to see if the problem persists.
To test your setup components try the following.
