Establish the connectionThe IB-CR300 is an external card reader with three different card reader slots. Thus, it is possible to use many different types of memory cards, from small to big. Data transfer speeds benefit greatly from the USB 3.0 interface with which the card reader is connected to to the PC. The power is supplied by the USB connection, an external power supply is not needed. One, Two or ThreeThe IB-CR300 is an external card reader for up to 3 cards. They can be read and written at the same time by PC, Notebook, Smart TV etc. The USB 3.0 interface allows fast data transfer wether you are using one or multible cards simultaneously. Speed reading technologyThe USB 3.0 interface enables fast data transfer even when transferring large files or the simultaneous writing of several cards. But don'tt worry when there is no USB 3.0 present on your PC, it is backward compatible with USB 2.0 and 1.1. Small and lightThe enclosure is made of lightweight plastic and makes the IB-CR300 a good traveling companion. Even better, the card reader works with every conceivable operating system.