1. As an EMMC chip to SD interface, BGA adapters can be freely in the software Suitable for 1B/4 mode, with a maximum speed of 17MB/S 2. Read and write SD card 3. Read and write TF card 4. Read and write SDNAND chip (QFN8 package)<br><br>usage method: 1. When reading and writing SD/TF cards, select SD/TFAUTO (4b or 1b) 2. When reading and writing EMMC, any packaged EMMC chip can be The operation method is the same as EMMC Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Color:As Shown Material:PCB<br><br>Package Contents: 1 * EMMC SD adapter<br><br>Only 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.