Solid AC Adapter
This is a great AC-class adapter, but the very nature of AC limits its usefulness. If you are in the room with your router, then you will enjoy a very fast connection. As you move further away and put walls between the adapter and the router, the connection speed quickly falls.
Nice appearance if somewhat large; Glossy black finish; Fast AC adapter connects at up to 867 Mbps on the 5 Ghz band; Has USB version 3 connector and included USB3 extension cable; USB v3 is the current standard and should be the default version on all quality networking equipment going forward.
Large adapter could potentially block access to a neighboring USB port on a laptop; it does include an extension cable which could help in this circumstance. The glossy black finish isn't a big deal to me either way but it is a magnet for fingerprints and dust.