Transystem 860E/MTK3329 driver issue in Mac OS X

jeffb's picture

It appears the Mac OS X drivers on Transystem's website for the 860E no longer work with newer versions of MacOS > 10.9.  I've done some digging, and it appears this device uses a Silicon Labs CP210x USB Bridge chip, but the current VCP drivers on their website do not seem to work for the 860E (I do not see the serial devices in /dev anymore).

Has anyone figured out this issue?  I've been trying to get support from Transystem, MTK, and Silicon Labs, but I haven't made any progress.

I think the issue is that the new drivers need to be configured with the MT3329's USB "VID/PID".  SiLab's website has a form where you can get customized drivers (, but you need to know the CP210x part number in the form, and I haven't been able to find out that information.  I believe I've found the VID/PID, so that's the last bit if info I think I need.

Does anyone know CP210x part is used in the MT3329?  I haven't been able to find a datasheet or anything for the MT3329 online.


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