USB Card reader is one type device accessing the data on memory cards. As many computers have no slots to read cards directly, then the USB Card reader is the best channel to achieve data transfer. The types of USB Card reader are varies; let’s know more from below introduction.
There are multi USB Card reader and single slot card reader. It obviously understands that multi USB Card reader has more than one port to read memory cards and single slot card reader only can support one type memory card. Multi one means the card reader can work with memory cards in different type, but only can read data from one card when connecting to the computers. Model in this version definitely stands for higher cost, but you have one “universal key” at hand.
Although there is no built-in memory for USB card reader, the function for it can be classified into the one with or without OTG. If you order the reader with OTG function, it means you can use it to connect with phone and exchange data between phone and computer. Also USB card reader is similar to USB Drive, there are many USB housings that brings more selling points.