In terms of compatibility, please consider the following --
HomePlug 1.0 (14Mbps) coexists and is interoperable with HomePlug 1.0 Turbo (85Mbps), but
at the lower speed. So, if you have an existing HomePlug 1.0 network and attach a HomePlug
1.0 Turbo device, it will connect at 14Mbps.
HomePlug 1.0 (14Mbps) and HomePlug 1.0 Turbo (85Mbps) can coexist with HomePlug AV
(200Mbps & 500 mbps) devices, but are not interoperable. So these devices can exist in the same
home and operate independently, but cannot communicate together.
HomePlug AV 200 Mbps and 500 Mbps coexist and are interoperable with each other, but at the
lower 200 mbps speed.