This portable USB 3. 0 card reader gives you read/write access to two SD memory cards simultaneously, including SD (Secure Digital), SDHC (Secure Digital High Capacity) and SDXC (Secure Digital Extended Capacity) memory cards. It connects easily to the USB-C port on your tablet or laptop for wide compatibility. Ultra-fast performance for workflow efficiency The card reader offers fast read and write access to two SD cards simultaneously, with support for USB 3. 0 speed (5Gbps). The card reader features SD 4. 0 and UHS-II support, allowing high-speed file transfers. With bus speed up to 312MB/s, the card reader offers uncompromising read and write speeds. The card reader is ideal for creative professionals, including photographers, videographers, and graphic designers, who need fast access to SD cards to offload raw images or edit video or photos, and quickly back up files. Supports a wide range of SD cards With the dual card reader, you can transfer data from two cards at the same time. The card reader supports all popular SD cards such as SDSC, SDHC and SDXC including UHS cards, and is backwards compatible with older SD card versions. The card reader will also support micro SD and mini SD (with adapter), MMC mobile, RS-MMC and MMC plus (with adapter). Designed for portability The card reader’s wrap-around USB-C cable lets you connect to a computer in the field or pack it up quickly when you’re done using it. The card reader is OS independent, with no driver or software installation required. It is USB powered, providing sufficient power for most applications. If you require additional power, connect the USB cable on your power source to the auxiliary Micro-B power port. StarTech also offers this same card reader/writer with a USB-A connector (2SD4FCRU3) to provide compatibility with a USB-A tablet or computer. 2SD4FCRU3C is backed by a StarTech 2-year and free lifetime technical support.