FWIW In case it is of use to anyone
My trawling of the web took some time before i found this gem
It’s a link to a site with a hack to install the Drivers which apple stopped supporting on machines after Snow Leopard
I’ve got this multi out sweety running again on Mavericks … quite chuffed 
Linking here on a music site as it was only locatable via other forum types when i was looking

