Device for operating two memory cards in two sockets with different pin arrangements

An electronic device comprising:

• a host controller;
• a first socket, in communication with the host controller, for receiving a first memory card, the first socket having a physical pin arrangement and mounted on one side of a printed circuit board (PCB);
• and
• a second socket, in communication with the host controller, for receiving a second memory card, the second socket having a physical pin arrangement and mounted on an opposite side of the PCB, the physical pin arrangement of the second socket is in an order reversed from the physical pin arrangement of the first socket such that a first pin of the first socket and a corresponding first pin of the second socket are aligned vertically on opposite sides of the PCB,
• wherein the host controller comprises:
• a first power terminal for powering the first memory card;
• a second power terminal for powering the second memory card;
• and
• a power switch coupled to the first power terminal and the second power terminal and for selectively delivering power to one memory card of the first memory card and the second memory card;
• wherein during a first time period, the host controller transmits power to the first memory card and cuts off power to the second memory card, and wherein during a second time period, the host controller transmits power to the second memory card and cuts off power to the first memory card,
• and wherein the first socket and the second socket transmit and receive same set of data signals.

A method for operating an electronic device, the method comprising the steps of:

• receiving a first memory device in a first socket mounted on a first side of a printed circuit board (PCB);
• receiving a second memory device in a second socket mounted on a second side of the PCB, the second side being opposite of the first side and a first pin of the first socket and a corresponding first pin of the second socket are aligned vertically on opposite sides of the PCB;
• controlling a power switch coupled between a power source, the first memory device, and the second memory device;
• connecting the power source to the first memory device if the power switch is coupled between the power source and the first memory device;
• connecting the power source to the second memory device if the power switch is coupled between the power source and the second memory device;
• powering the first memory device and cutting off power to the second memory card;
• and
• powering the second memory device and cutting off power to the first memory card.

A method, for seamless transition between two memory devices, comprising the steps of:

• receiving a first memory device in a first socket mounted on a first side of a printed circuit board (PCB);
• receiving a second memory device in a second socket mounted on a second side of the PCB, the second side being opposite of the first side and a first pin of the first socket and a corresponding first pin of the second socket are aligned vertically on opposite sides of the PCB;
• selecting, by a selection unit, the first memory device;
• powering up, by a power source, the first memory device;
• powering off the second memory device;
• accessing the first memory device while the second memory device is powered off;
• selecting, by the selection unit, the second memory device;
• powering up, by the power source, the second memory device;
• powering off the first memory device;
• and
• accessing the second memory device while the first memory device is powered off.