Card reader is a card reading device, which needs to be used with the insertion of a matching memory card (storage medium), including our common SD card, TF card, CF card, etc. The card reader is the bridge between memory card and computer equipment, which is responsible for the transmission of both.
The U disk is called the flash disk, is a flash media and data interface integration, storage media does not support assembly and disassembly, through the USB interface to connect the data terminal, plug and play.
The transmission speed of the card reader mainly depends on the reading speed of the data interface and memory card, while the transmission speed of the U disk mainly depends on the reading speed of the flash media of the data interface and the U disk.
