It depends on the actual layout of the card. Some "bundled" motherboard riser cards are actually fully capable standalone PCI-e cards. Quite a few, however, use a proprietary slot (even if it is PCI/PCI-e based) along with additional components on the motherboard.
Plug it in and try it. A sure sign of it not working will be if you can't get it to fit into a standard PCI/PCI-e slot. From what I can tell of the Maximus motherboard and the card, it sure looks like a PCI-e 1x card and slot. Your next quest would be for the proper drivers.