A card reader scans data on a media card and communicates it to a computer. It usually plugs directly into a computer through the USB port or other peripheral port. It has one or more card slots designed to accommodate a specific card type. It is commonly used to transfer files from the card to the computer for storage, editing, or printing. Some card readers can also record data from the computer onto the card.
Types of Card Readers
Kinds of Card Readers include the following:
Single card reader
A single card reader can read only one media card format. It usually plugs directly into the USB port instead of using a cable.
A multicard reader has two or more card slots in different formats. It usually has two to nine slots. It usually connects to the computer using a peripheral cable, since it is too bulky to connect directly.
Series card reader
A series card reader has two or more slots in the same format. For example, it can have three SD card ports for reading three SD cards.
Choosing Card Readers (Buying tips)
Interface: Choose a card reader with a USB 2.0 interface to ensure compatibility with most printers. If you use high-capacity cards for transferring large files, look for one with a FireWire connection.
Transfer rate: Choose a card reader with a high transfer rate for faster file transfers.