● Product Description This card reader is specialized for microSD and SD cards, eliminating unnecessary features!! Supports large capacity microSDXC and SDXC. Compatible with SD cards featuring high-speed read/write functions such as UHS-I Speed Class 1, 3, etc. Driver-free plug and play. Simply plug it into your PC, no cable required. The LED light on the main unit lights up when powered on and blinks during data transfer. ● Notes Please insert only one card, either an SD card or a microSD card. Inserting both simultaneously may prevent recognition. Card reader unit only. Memory cards shown in the images are not included.