This is a conversion adapter that allows you to use mini B-CAS devices with a B-CAS card. There are two ways to insert a mini B-CAS card, and it is sold as a set of 3: Type A, Type B, and a white card. We have confirmed that this device works correctly, but we do not provide any support, including for compatibility issues. No manual or instruction manual is included. Mini B-CAS cards and B-CAS cards are not included.