I am using this adapter since 2016 and it is best adapter which I have use in my entire life .
Its USB interface is 2.0 .
Its dimensions is 21 mm into 15 mm into 707 mm.
Wireless speed is 150 Mbps over 11n .
Its package contain W311MUI wireless Adapter and Installation CD.
Its price is is about 500 rs.
I think it best adaptor for everyone . And it is also very cheaper in price as compare to other adapters .