Abstract: A card reader separable from a host machine is provided. The card reader includes a main body having a first card-placing slot for placing therein a first memory card, a connection port mounted on the main body for separably connecting with a plug, and a carrying rack mounted inside the host machine for mounting thereon the plug and separable carrying the main body so that the card reader can be separated from the host machine. The mobile card reader provided here is able to be used in both ways of being built-in the host machine and being connected from the outside.

Abstract: A device is proposed for transferring from a memory card interface to a USB (Universal Serial Bus) interface. There are a universal I/O device able to simulate signals from a memory card interface; a micro controller able to control the universal I/O device to access the data in the memory card and to generate a USB data package; a USB serial interface engine able to transfer the USB data package from the micro controller to a serial data stream; and a USB transfer/receive device able to connect to a USB storage device and to transfer the serial data stream to a USB electrical signal.