You can extend the TF card from inside to outside for the mobile Tablet And test the TF card. Extension Available: Make it possible that you extend the card slot out of computer desk or car navigation to the place which is easy to use. No need to worry about the some difficulties in insert the Micro-SD Card to update maps or copy files. Quickly Recognized: This Micro-SD card,also called TF card,can realize quick information recognition without any read speed changed. Just depends on it to make information exchange easily. Wide Compatibility - Designed for GPS,3D Printer,for Raspberry Pi,TV, SanDisk micro-SDHC / SanDisk SDXC / for Arduino / DVD / DVR / LED / LCD screen or Smartphone etc. Easy to Use: The extension function of this Micro-SD to Micro-SD Card cable is realized by inserting Micro-SD reader to Micro-SD slot to make cable extended. Micro-SD extension ribbon cable recognize cards larger than 32GB easily. Color:As Shown Material:PCB Package Contents: 5 * Micro-SD TF Reader Memory Card