How a USB Memory Card Reader Works? Pinout

Working of USB Memory Card Reader

There are many types of memory card available in the market like SD cards, Micro SD cards, Mini SD cards but our laptops and Computers have not internal card readers for Micro SD cards, Mini SD cards so we need USB Memory card Reader for transferring data memory card to Computers or Laptops.

Let,s know How a USB Memory Card Reader Works.

What is USB Memory Card Reader?

USB Memory Card Reader is a compact device for transferring data between Computer and portable flash memory cards such as SD cards, Micro SD cards, Mini SD cards etc.

What is the Function of a USB Memory Card Reader?  

The main function of a USB Memory Card Reader is read, copy, backup data from portable flash memory through the USB port if there is no card reader in your computer or laptop. 

What inside a USB Memory Card Reader?

A simple USB Memory Card Reader has one or more slot for inserting SD cards, Indicating LED, Class-A USB port for connecting computer or laptop, and a small processor.

Working of USB Memory Card Reader:

The USB Memory Card Reader takes power supply from the device to which you connect the USB Memory Card Reader. As we know an SD card has four data pins and other pins but USB port has only two data pins, so the processor collects data from the SD card through four data pins and after processing it gives the data to the computer or laptop through two pins.

Some USB Memory Card Reader has the function for operation of a specific memory card, but nowadays USB Memory Card Readers are designed to read multiple types of memory cards.

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