prolific usb to serial comm port driver problem

To downgrade, use the configuration panel, choose COM and LPT and right click: the first choice shouldīe 'update driver' (or something similar: sorry, but I've the French version, and hope my translation is understandable). If you have previously used the PL-2303 (with W7) and upgrade to W10, it's simple because the previous versions of the drivers are still on your computer. The latest version doesn't work anymore with old hardware, and you need to downgrade the driver. Sometimes, installing the latest version of drivers solve the problem, but in this case, this is the opposite. The version driver (ser2pl.sys or ser2pl64.sys) should be something like 3.6.78.350īut this one doesn't work anymore with old PL-2303 hardware. You can check it, using the configuration panel: watch the COM and LPT section, you should have the 'Prolific USB-to-Serial Comm (COM X)'. Indeed, when installing W10, the device driver for PL-2303 is the latest version. May be, a solution will be to use the old W7 drivers version into W10. I don't want to send my devices to trash because they are too old (less than a year !) to be supported by W10.

Prolific's guys are fun when they said : ' Prolific recommends to use It's a shame from Prolific to not support this devices, because they are still used (my LED badges are less than a year old,Īnd use EOL PL-2303 HX). This is clear: if your device is using an old chip version of PL2303, the drivers not works with W10 (and W8).Īs many people, you probably upgrade directly from W7 to W10, and sure, don't know that this problem was already present with W8. Windows 8/8.1/10 are NOT supported in PL-2303HXA and PL-2303X EOL (End Of Life) chip versions.

Of course, you can try to manually update the driver at Prolific site:īut, look carefully on this page and you will read an important notice in RED : This work fine, but looking at the configuration panel, you will then notice that there is anĮrror code 10 and the driver is not working properly. You plug the device into USB, it is well recognized by W10 and it try to load the Prolific driver. All this devices use a PL2303 to provide a connection to an USB port, but inside, they are RS232-like interface build (and appear as a COM port in your operating system). Myself, I've the same problems with scrolling LED Badges, and USB to COM dongles. There is lot's of people reporting problems with W10 and Prolific devices (based on popular PL2303 adapter).

Prolific usb to serial comm port driver problem