Compact SD 4.0 Card Reader/Writer Expand access to two SD card slots with the Compact USB 3.0 SD 4.0 Card Reader. Connect the Card Reader to your USB-A or USB-C desktop, laptop, tablet or smartphone that supports USB OTG with the included adapter. Quickly read and write high resolution images, video and data at speeds to 5 Gbps from up 12 different card types. 2-In-1 Compact Design The IOGEAR Compact USB 3.0 SD 4.0 Card Reader is small enough to go where you go while supporting all major SD card formats. The 2-in-1 reader supports up to 12 types of cards including: SD SDHC SCXC SD UHS-I SD UHS-II Mini-SD Micro-SD (T-flash) Micro-SD UHS-I RS-MMC Mobile-MMC MMCPlus MMC-micro Expand Your Memory Storage The Compact Reader connects directly to a USB-A port and includes a USB-C adapter for connection to multiple USB-C device types including your desktop, laptop, tablet or smartphone. The reader is fully powered by your USB port and requires no external power supply. This true plug-n-play Reader requires no drivers or installation – just plug it in!