The day before yesterday I have bought a Sitecom USB to Serial cable (UC-104). The common problem with such cables is that there are no drivers from the producer for Mac OS X. The good thing is that most of these cables use a Prolific chip. Prolific is offering a driver for cables based on their chip on their site.
When I connected the Sitecom cable “About this Mac” reported that it is a Prolific but the driver did not load. I figured out that it is the Vendor Id and Product Id that were not matching.
I had to edit /System/Library/Extentions/ProlificUsbSerial.kext/Info.plist and change the vendor and product Id’s apropriately. (You can do that with every cable that has a prolific chip in it)
And after that I had to run kextload /System/Library/Extentions/ProlificUsbSerial.kext . And imagine what was the biggest problem I had. Yes exactly that I forgot to run kextload >_<
But now it works and through my post it is hopefully helpfull for someone that googles for this cable and mac ;)
(if it was usefull for you write a comment! I will be very happy about it ;) )
Joe Black
on Oct 4th, 2005
@ 12:00 pm:
Hi,
Thanks for the post. I have recently tried using a SITECOM USB/Serial adapter, but no success. I have set the idProduct to 8296 and the idVendor as 1367 in Info.plist. Can you think of anything I may be missing.
Thanks in advance for any help you can give.
JoeB
esden
on Oct 4th, 2005
@ 2:08 pm:
idProduct has to be 8296 and idVendor 24969 perhups that is your mistake?
Have you also run “extload /System/Library/Extentions/ProlificUsbSerial.kext” in the console as root?
That was my biggest mistake the time I did the hack.
starmagoo
on Oct 17th, 2008
@ 12:18 pm:
Hi,
i searched for file named “ProlificUsbSerial.kext” but i can’t find anyone…
Whats wrong?