Independent design ensures stable and good performance. Equipped with a KEY - B USB3.0 calling interface for efficient connectivity. Compatible exclusively with M2 B key interfaces; not suitable for M2 A E M keys due to different pin definitions. Supports hot-swap functionality, allowing for easy memory card replacement without unscrewing. Capable of reading two memory cards simultaneously, with a maximum theoretical support of 2 memory cards over 1T. This product is designed for users who require reliable and efficient memory card management. With its independent design, it offers stable performance and a user-friendly KEY - B USB3.0 interface. The hot-swap feature allows for quick memory card changes, making it ideal for those who frequently switch cards. While it supports dual SIM dual reading, users should be aware that reading two cards at once may slow down the reading speed. For optimal performance, it is recommended to read and write to each card individually. Color: Black Material: PCB Package Contents: 1*M.2 B-KEY to Double TF Adapter Board