Dell has been teasing plans for a true wireless dock that would let Latitude 6430u Ultrabook owners get all the expansion they need without proprietary technologies -- or the usual cable spaghetti. It's at last here in the (rather plainly titled) Dell Wireless Dock. The station relies on a bandwidth-rich WiGig connection to give the Latitude supplementary audio, DisplayPort, HDMI, Ethernet and three USB 3.0 ports without skipping a beat. Few would call the Wireless Dock cheap at $249, bu