Take the hassle out of transferring media with the Advent CR312 USB 2.0 Memory Card Reader. Transfer with ease This memory card reader has 4 slots and is compatible with a range of memory cards, including SD, SDHC and MMC memory cards. You won't have to connect your device to your PC when you use the CR-312, as you simply put your memory card into the reader. USB connection Thanks to the USB connection you can simply plug your CR312 USB Memory Card Reader into your PC and start transferring, with fast data transfer speeds. It is compatible with Windows, Linux and Mac operating systems, and as it is USB powered you don't need to carry an extra power supply. Make data transfers simple with the Advent CR312 USB 2.0 Memory Card Reader.