USB 3.0 MULTI-CARD READER: Access the most popular flash card formats from a USB-A, USB-C or TB3 port on your computer; Features 1x Secure Digital (SD)/Multimedia Card (MMC), 1x microSD/TF; Supports SD 3.01 & UHS-I; USB 3.2/3.1 Gen 1 (5Gbps) PORTABLE: Card reader is USB bus powered & features a USB-C and USB-A connector on either side with protective caps; Compact design similar to USB flash drive: 2.9 x 0.8 x 0.4in (73 x 20 x 11mm); SD slot does not support SD card write protection WIDE COMPATIBILITY: Works with high capacity (SDHC/microSDHC), extended capacity, (SDXC/microSDXC); When used with adapters (not included) device supports MMC-plus, MMCmobile, RS-MMC, MMC micro, miniSD EASY-TO-USE: OS independent supporting Windows, macOS, Linux, Chrome OS, iPad OS, Android; Bult-in Activity LED; USB 2.0/1.1/1.0 compatible; Ideal for saving, editing & transferring content in videography, photography, podcasting, YouTube & social media SIMALTANEOUS SLOT ACCESS: Memory card reader features Dual LUN (Logical Unit Number) enabling SD and MicroSD cards to be read at the same time