Unfortunately this connection is completely useless for daily data transport of large amounts of data (both with many small files, as well as a few large files such as movies). Transfer rates vary from 1.7MB / sec and 2.8MB / sec. My two year old USB flash drive of Trekstor creates more than twice the write rate. For SanDisk, a manufacturer that is known for high quality and fast CF and SD memory cards, so the product is simply embarrassing.