The only OTG stick with fully retractable ports also impresses with its speed, for example with the highest read data rates in the test. At its peak, the Lexar Jumpdrive M20 Mobile 64GB reaches 149 MB/s for reading and 77 MB/s for writing on the test PC. On the smartphone, the data rates are a maximum of 12 MB/s (read) and 9 MB/s (write)...