The G870 is a Pentium processor, as such it does not have vPro KVM support.
For specifric information on this chip see: http://ark.intel.com/products/53493/Intel-Pentium-Processor-G870-3M-Cache-3_10-GHz?q=g870
You can also use the http://ark.intel.com site research other chips as well.
Column 3 of the above mentioned web page contains the chip set models. Realistically just because a chipset can be vPro enabled doesn't mean it is enabled by what ever OEM is producing the motherboards. When purchasing vPro systems and or Motherboard/CPU combinations, make sure the item is labeled as vPro to ensure compliance