The connection rate jumped up to 867Mbps on its own a while later. Not sure why it started at 400Mbps, or why it jumped up to where I expected it to be, 867Mbps.
The router is the Netgear Orbi, that's the name, not designated by number. It comes with a satellite, and there are dedicated 5GHz. radios for the backhaul in both the router and satellite (used in media bridge mode, full speed). As a result the wireless speed for clients connected to the satellite is about the same as those connected to the router. Which is twice as fast as the theoretical max for clients connected to a wireless extender. So it is roughly equivalent to having a router with a wire AP, except it's all wireless. Of course, nothing is as good as having a wired AP, since wireless is variable no matter how you slice it *smile*.
Anyways, it's a nice "wifi system", I've been waiting for this sort of thing to come out. I have my router in one end of my house, and the other end of the house is my living room. So the satellite unit is about in the middle of the house. Which gives me much better wireless in my living room without taking the hit from a wireless extender or powerline networking. Nice setup. Great wireless throughout my house now.
Thanks.