MacBook Pro 2012 with Sierra (OS X 10.12) does not recognise Arduino Mega R3

I plug in the Arduino and see it boot up but nothing appears in the USB Device Tree?

I tried the hardware out in my bootcamp Windows 8. I could see the USB device being detected there so that seems to rule out any hardware/cable failure. Still you need Windows 10 to do Arduino development and I really want to be able to do Arduino dev on my MacBook booted with Sierra.

The Arduino is one from Jaycar called Duinotech Mega

Fully Arduino™ and DuinoTECH Compatible
• ATMega2560 Microcontroller
o Program Memory: 256KB(8KB used by bootloader)
o Speed: 16MHz
• ATMega16u2 USB-Serial Chipset
• IO:
o Digital IO: 54 pins (15 are configurable as Digital or PWM)
o PWM Capable: 15 pins
o Analog Inputs: 16pins
o Serial Ports: 4 (1 is connected to on-board usb-Serial port)
• Input Voltage:
o 5VDC Regulated via USB port or 5V pin
o 7-14VDC via Vin pin
o On-board regulator supplies 5V when unit is powered via Vin pin
• Requires USB B type cable. Use WC7705
• Dimensions: 108(W) x 53(L) x 15(H)mm