For smart phone which supports OTG agreement, compatible with Samsung, Nokia, Ericsson, etc. (include all smart phones and tablets which with Micro 5-pin or Micro 11-pin slot) Supports read / write large capacity TF or Micro SD card. Two connectors, one is USB 2.0 for PC and the other is Micro USB for smart phone Samsung series: S3, S4, I9100, I9220, I9250, Note 1 / 2 / 3, P7510, P7300, I9103, I9200, Mega S5820 etc. Nokia series: N8, 808, 603, E7, etc. Sony Ericsson series: L36H, XL39H, Xperia i1L35h, LT25c, One Sony Mini, etc. Model: CR-128 Interface: USB2.0 Reader Type: All in One Supported Memory Cards: Micro SD/HC Compatible: Android, Windows 7, MAC OS, Windows Vista, Windows XP, Windows 2000, Windows 98SE It happens all the time: your phone or tablet is overloaded with videos, music and photos AGAIN? Expand your device's internal memory capacity with the OTG USB 2-in-1 Flash. This drive allows you to insert a Micro SD card and conveniently expands your storage (Micro SD card not included). Now you're free to download contents from your phone onto the flash drive, wherever life may take you. Plug the flash drive into a PC to transfer files to and from your phone." NOTE: Your mobile device need to have OTG function in order to access files from this device. To access files on the SD memory card, search and download "File Manager" free app from Android app store. Open the "File Manager" app, tap on "SD card" to check out the files from the micro SD card.