Features: Multiple in one function: Supports TFSD card to meet different storage needs. It can simultaneously read two card slots, making it convenient for users to quickly switching and access files. USB 3.0 fast speed transfer: Using the USB 3.0 Interfaces, it provide a data transfer speed of up to 5Gbps, which is 10 times faster than USB 2.0, effectively improving read and write efficiency. Type C Interfaces: for modern phones, tablets, and computers, making it usable on various devices. OTG function: Supports OTG (On The Go) function, enabling direct connection and facilitating data transmission and management on mobile device without the need for computer. Two drive letter design: With the Two drive letter, it is easy to recognize and access the content of TFSD card separately, simplifying file management. Portability: easy to carry, for travel or daily use, allowing you to access your storage card data. No additional driver required, and once inserted, it can be used conveniently and quickly. Durability: it strong wear resistance and drop resistance, extending its service life. Specifications: Materials: Aluminum alloy Length: 7.7x2.1x1cm/3.03x0.83x0.39inch Package Includes: 1PC USB 3.0 Card Reader note: Please allow 1-3cm error due to manual measurement. makes sure you not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item.