Abstract: A protective case for holding interconnected electronic devices is disclosed. The case may comprise a top holding portion configured to hold a top part of a first electronic device, a rear holding portion configured to hold a middle part of the first electronic device, and a bottom holding portion configured to hold a bottom part of the first electronic device. The top or bottom holding portion may comprise an extension holding portion to hold a second electronic device operatively connected to the first electronic device. The extension holding portion may comprise one or more apertures for external access of at least part of input and output devices of the second electronic device. The first electronic device can be selected from a cellular phone, a tablet computer or the like, while the second electronic device can include a memory card reader or a credit card reader.