This option allows you to choose a more powerful (and usually more expensive) motherboard. Some additional features included in a motherboard upgrade can be better overclocking, better RAID capabilities, better audio, more built-in devices, etc.
If you are not sure of what you need, do not choose a motherboard upgrade. You may place a question into the comments box at the end of the form with any questions about the new computer's capabilities or upgrade requests.
If you do know what you need, and it is not listed here, please tell Vanco Computing what you want to be used into the Comments box at the end of the form.