Your motherboard only has a PCIe 1.1 slot.
According to PCIe standards a PCIe 2.0 Video card should work since it requires the same amount of Power as a PCIe 1.1 card; however, there is no guaranty.
If the video card is a PCIe 2.1, the chances that it will work is far less since most of the cards require more power. However, some motherboard manufacturers provided BIOS updates to fix the issue.
Be aware that to data transfer rate is 2.5GT/s for PCIe 1.1 and 5GT/s for PCIe 2.0, which means the video card will not run to its full potential.
Personally, if you want to try it, I would make sure to buy a PCIe 2.0 video card.