A secure digital format card that includes two interfaces to a processor is provided, comprising a housing, and a processor that includes a secure digital input/output (SDIO) interface, a second interface, and further connections different from the interfaces. A first set and second set of pads are located at the housing, a subset of the first set for communicating with the processor via the SDIO interface. A subset of the second set for communicating with the processor via the second interface, and a further subset of the second set for communicating with the processor via the further connections. The processor is configured to: enable the subset of the second set of pads via the second interface when enable data is received via the one or more further connections, from the further subset of the second set of pads.