& plug in the interface cable, Windows 10 will then update drivers BUT with Code 10 error. If I uninstall all relevant drivers, then install my original Vista Driver v3.2.0.The newer interface cables when connected to Windows 10 automatically installs the drivers & works on Windows 10, but will not work on Windows XP (I don't have a driver disk for this cable but it is CH340 v.8).The older which used to previously work on Windows 10 still works OK on a Windows XP Laptop proving that the interface is still functional.Notice that the device will show up as being on the same COM port that it was before (i.e., COM5), but will show up on the new port if you close the Device Manager and open it again.Have now got things working in a rather 'round-about' way. Click the "Advanced" button.Ĥ) Pull down the scrollbar on the bottom, left side and select COM 1, 2, 3 or 4 (NOTE: Choose one that does not say "in use" next to it). Simply follow the instructions below:ġ) Follow steps 1 and 2 in "How to Check the Driver Installation."Ģ) Right click on the "Prolific USB to Serial Port" and click on Propertiesģ) Click on the "Port Settings" tab.
Windows XP, 2000, ME, and 98 include a function that allows you to reassign the COM port. If the adapter is installed on COM5, a device with such a limitation will not work until the COM port is reassigned to COM1 - COM4.
Sometimes a device won't work with the USB-to-Serial adapter even though everything appears to have installed correctly because some computers will only scan a limited number of COM ports.įor instance, it is possible that a computers has a limitation of scanning the first four COM ports. It is also possible that the COM port number assigned is too high. Prolific USB-to-Serial Comm is assigned to COM12
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