Do Tableau USB write blockers work with USB memory card readers?
Tableau USB write blockers work with some USB memory card readers. Whether or not the Tableau USB write blocker works with a specific USB memory card reader depends on the internal design of the memory card reader. For example, USB memory card readers often support more than one type of memory card/slot. If the USB memory card reader reveals itself on the USB interface as a single USB device (or “function” in USB parlance), then the Tableau write blocker will generally work well with the USB memory card reader. However, if the USB memory card reader reveals each memory card/slot as a different USB device–that is, the USB memory card reader presents itself as a compound device–then the Tableau write blocker may not work as expected. The Tableau write blocker will “lock onto” the first mass storage device it finds, ignoring the others. If a memory card is inserted into a slot in the reader which isn’t the “first” device, then the T8 won’t find the memory card. Unfortunately, it is very
