Needed a high speed card reader and ordered one of these today, which seemed cheap as chips for what it is.
There are other no name models around for the same kind of price but the number of positive reviews made my mind up for me.
Supports Next-Generation Memory CardsSDHC (UHS-I), SDXC (UHS-I), microSDHC (UHS-I), microSDXC (UHS-I)
Dual slot to possibly host both a full size and microSD card at the same time? (Update - It is not absolutely implicitly confirmed whether both can be used at the same time but user experience tends to suggest not).
Up to 90Mb/s read and 60Mb/s write according to the blurb.