Notebook M600 Series Support Docs by product:

Not sure which notebook to select?
The model number is located on the bottom of your notebook.

 ArrowGateway® M675 Notebook
 ArrowGateway® M680 Notebook
 ArrowGateway® M685-E Notebook
 ArrowGateway® M685-E SB Notebook
 ArrowGateway® M685-G Notebook