[jacko5]

Then put the USB into the chromebox and install Openelec ??
Cheers.

yes, just like the first post here says:

For a standalone setup, you will need to perform the following steps:

• Open the ChromeBox and remove the write-protect screw
  
• Put the ChromeBox in developer mode
  
• Download/run the Kodi E-Z Setup Script
  
• Select the Standalone / coreboot Install option, which will backup your stock firmware/BIOS and flash a custom one
  
• Create install media for desired OS. Script includes option to create install media for LibreELEC
  
• Power off ChromeBox
  
• Connect/plug-in USB install media (if not using LibreELEC media you just created)
  
• Power on ChromeBox, Press [ESC] from boot menu, select USB device
  
• Install LibreELEC, GalliumOS, or your OS of choice
  

Matt.
Once again many thanks.
Does my Samsung series 3 i5 chromebox have a screw to remove or is it a jumper thing to do ( it has not arrived yet ) ?