motherboard - What kind of board does an XMC network card fit in?

I'm looking at 10GbE network cards, and most of what I find are XMC format, like the XPort3300 (just an example). I'm trying to understand how these cards fit on a board. I'm very new to low-level hardware, so it's very confusing for me.

Will these kinds of cards fit on a standard motherboard, like in a desktop PC? Do they require something specific?

If it helps, I'm more interested in Intel, rack-mounted systems.