Prolific USB to serial Driver Windows 7 SOLVED (with partial fix for windows 8)
(I was getting CODE 10 in device manager- you may be having different problems… give this a go)
I own a Garmin Geko 201 GPS, and I am also running Win7 x64
The default driver that windows suggests I download whenever I use its data cable (which has an inbuilt Prolific USB to serial conversion chip) does not work. It gives an error “This device cannot start. (Code 10)”
The solution after wading through many forums and reading mostly useless advice was to install the Vista driver. Ignore any warning messages dont use compatibility mode. Then also check in the device manager that its not set to a com port that is in conflict with something else via its properties tab.
This solved my problem, as well as many other peoples problems from what I could see.
This chip is often used in cheap cables that connect HAM and HF radios and other devices such as Nokia phones to a PC. The tried and true solution from what I could tell seemed to be to install a Virtual Machine and run XP. So if this driver does not work, then perhaps that may be the solution for you. I’d suggest installing Virtual box as its free and opensource though others used VMWare (I have successfully used Virtual Box to solve a similar COM port issue with diagnostic software on Komatsu trucks though the crap software required Win 98 not XP).
However if you wish to give the driver a go you can find the link for its download here :
The forum post where I found the information :
Let me know if it works, though I cannot provide support if it does not.
UPDATE: one of the commentors found a different driver worked better on windows 8
Here is a link to the latest driver, wanted to get it running on windows 8. http://www.prolific.com.tw/US/ShowProduct.aspx?p_id=225&pcid=41 but it seems some chipset versions are not supported anymore in windows 8. Driver is suppose to work for windows vista,7 and 8
I would force the listed vista drivers first, failing that try the prolific drivers as mentioned above. But Please Share your success, I do not have the cable anymore, so I as usual cannot comment or help any more than this.
I recently encountered this problem again in a HAM radio programming cable. I knew what to do but found this additional site which has PICTURES in its description of what to do. Blows me away that prolific hasn’t fixed this after all these years. Unless these chips are clones ? ? Meh in any event works fine. I know the links are for a HAM radio but if your doing anything with a prolific chip give this a whirl.