Yes, it comes with the bridges necessary to do 4-way. And it comes with a perfectly good 3-way bridge. The problem is that the instructions appear to be faulty.
And I'm still waiting for someone to report whether a double-wide card can be inserted in slot 7 with all of the front panel plugs in use. I guess I'm gonna have to tear apart my current gaming rig to get at one of my old cards and check for myself.