Memory card adapter

A method of connecting memory cards to a host using a card adapter having a first memory card interface and a second memory card interface, the method comprising:

• receiving a first memory card at a first memory card interface of a card adapter, the first memory card associated with a first file system;
• receiving a second memory card at a second memory card interface of the card adapter, the second memory card associated with a second file system;
• controlling operation of the first memory card and the second memory card, wherein the first memory card and the second memory card are operable in each of two selectable modes including:
• a first mode to emulate, by a controller of the card adapter, a virtual file system that presents to the host a unified image of a file system that includes the first file system and the second file system;
• and
• a second mode to present one of the first file system and the second file system to the host;
• and
• configuring the first memory card and the second memory card to operate according to a selection of one of the two selectable modes.

A method, comprising:

• in a memory card adapter electrically coupled to a host, performing:
• receiving electrical connections of each of a plurality of memory cards including a first memory card that operates at a first operating voltage and a second memory card that operates at a second operating voltage that is different from the first operating voltage;
• determining the first operating voltage of the first memory card and the second operating voltage of the second memory card;
• and
• supplying the first operating voltage to the first memory card and supplying the second operating voltage to the second memory card to enable the first memory card and the second memory card to conduct a communication session with the host via the memory card adapter.

A card adapter for interfacing between a host and a number of memory cards, comprising:

• a plurality of memory card interfaces each configured to connect with one of a plurality of memory cards including a first memory card having a first file system and a second memory card having a second file system;
• a host interface configured to connect with a host;
• and
• a controller operatively interposed between the host interface and the plurality of memory card interfaces and configured to control the plurality of memory card interfaces to control connections between the host and each of the plurality of memory cards connected thereto wherein the controller is operative to emulate a virtual file system that presents to the host a unified image of the first file system of the first memory card and the second file system of the second memory card connected to the card adapter, and wherein the controller is operative to transfer data between the first file system of the first memory card and the second file system of the second memory card transparently to the host.