Lexar LSDMI32GBBEU633R Class 10 Micro SDHC 32GB memory card with USB 3.0 Reader (UHS-I, 633x) (Accessories)
The map I like very much, although it is far removed from the values given here (lt. Blackmagic Disk Speed Test). 5 Stars. Unfortunately, Lexar has released quite embellished product images, so you should not expect too much from the USB adapter.