Question about HP ProDesk 400 G3 MT

According to the product page and that there is no dedicated GPU installed, the PCIe x16 slot therefor must be free. The other question you should ask yourself, is how much the power supply delivers. According to another retailer that lists this product, it has a 180W power supply.

Hardware Reference Guide: http://h10032.www1.hp.com/ctg...
Maintenance and Service Guide: http://h10032.www1.hp.com/ctg...