Rather than recommended by the DKB card reader of [...] for overpriced 50, - you can also use the following substantially cheaper for the DKB-secure online banking:
[...]
Who does not want to organize yet another no-frills to the reader, for the completely sufficient. The extent of the Reiner-Reader possibly more can, you must, if necessary, there on their website look, see: [...]
The "SCM SRC 3310" is operating properly with the more than the above manufacturers webpage relatable driver. Even with Star Money 9.0. and this. under all OS including Windows, Apple and Linux
That should apply to all banks that are supported by StarMoney, see StarMoney website. And that's pretty much all German banks.