Winstars WS-WN577A2

Overview
This model is re-branded under many names and is recognizable by its unique shape.

"The model WS-WN577A2 is only the plastic shell different from WS-WN566A2 (WS-WN566A2 with a Circular arc shell, WS-WN577A2 with a Square shell..."
 * From FCC Cover letter doc:

Rev A and Rev C have been noted but there is likely internal difference.