This has been posted on the Konica-Minolta Drivers page for some time now:
and since you didn't mention a specific MacOS version, I thought it prudent to let you know.
In general, the bizhub C754 offers the better compatibility between different bizhub platforms, and is the driver that was used in a successful MacOS implementation for a larger Pharos iMFP for Konica-Minolta deployment just over a year ago. We did have to modify the PPD eventually used to remove some CUPS filters that were getting in the way of client operation (two status/monitoring filters). We did not have a problem configuring the queue for Duplex support.