Carrying cases, holders, protective cases and stands featuring power supply connectors, adaptors, speakers and battery charging devices, specially adapted for use with handheld digital electronic devices, namely, cell phones; Computer apparatus, namely, a converter that superimposes an Ethernet signal on an existing cable; Computer docking stations; Computer network adapters; DC/AC power converters; Electric cords; Electrical cables for use in connections; Ethernet adapters; Ethernet cables; ...