Rocketek RT-CR9 Super Speed USB 3.0 Card Reader with funtion base on Easy portability design, with build-in mirco SD card slot, it is able to store the mirco SD card inside the memory card reader, and don't need to worry about losing the cards.
-2 slots: SD/MMC + Micro SD/T-flash
-USB 3.0 interface for PC, and Mirco USB port for the smart phone.
-LED indicator for working status
-Build in Mirco SD card slot
-SD slot:SDXC/UHS-I SD/SDHC/SD/Extreme SD/Extreme III SD/Ultra II SD/MMC(mini SD/mini SDHC/RS-MMC/HS RS MMC may need a adapter)
-Micro SD(TF) slot:Micro SDXC/Micro SDHC/Micro SD
*Windows 10, 8, 7, Vista, XP
*Mac OS 9 and above
*Linux: Modern kernel 2.x & 3.x based distributions with USB Mass storage support
1, When you use the USB interface please put the Mirco USB port fully inside the USB port.
2 MEDIA SLOTS: SD/MMC + Micro SD. Support SDXC up to 2TB, SDHC, SD, MMC, RS-MMC, Micro SDXC, Micro SD, Micro SDHC Card, and UHS-I Cards.
LOCK THE MIRCO SD CARD: It allow you store the mirco card inside the slot, and don't need to worry about losing the cards.
PLUG AND PLAY: Hot swapping; USB power (no external power or battery); Supper speed USB 3.0 and backward compatible with 2.0/1.1. (Mirco USB port just USB 2.0)
OTG use method
1. Open Developer options 2, Open USB debugging 3, Mtp is USB connection mode 4, Fat format for Memory Cards