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 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 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 the reading speed. For optimal performance, it is recommended to read and write to each card individually.Color: BlackMaterial: PCBPackage Contents:1*M.2 B-KEY to Double TF Adapter BoardOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.