The `PC_TO_RDR_XFR_BLOCK` structure has a fields which is used in multi-block transfers: - `levelParam`: Indicates if APDU begins or ends in this command Some constants for `levelParam` are defined.
https://raw.githubusercontent.com/Nitrokey/libnitrokey/master/data/41-nitrokey.rules lists the following USB VID/PID: 20a0:42b2: Nitrokey 3A Mini/3A NFC/3C NFC