brew cask install wch-ch34x-usb-serial-driver.
This chipset is used in several Arduino-compatible clones and serial-to-USB cables. Latest macOS Sierra-compatible driver for devices using the CH340G, CH34G or CH34X chipset. New in Release 346.03.15f09: Graphics driver updated for Mac OS X El Capitan 10.11.6. CUDA Application Support: In order to run Mac OS X Applications that leverage the CUDA architecture of certain NVIDIA graphics cards, users will need to download and install the 7.5.29 driver for Mac located here.