Fast, with good connections and stylish in black lacquered metal.
The negative is that it requires a full USB3.0 (2 channels) on the motherboard to the card reader to work. Would have been great if it worked also with USB 2.0 with automatic or manual switch. In order to function properly it needs also stream via legacy 4-pin Molex connector, a SATA connector and two USB 2.0 connections to the motherboard. Pretty bad info about the connections. One can also note that it is completely black, that is not the same dark gray color that most black computers. The rate I think is good but have not measured up.
Works well in linux (Ubuntu 15.10 ID 05e3: 0732 Genesys Logic, Inc. All-in-One Card Reader)