PRODUCT FEATURES:1. Interface: Micro USB and USB 2.0 connectors. 1x SD/MMC slot, 1x Micro SD/TF slot2. Support SD, SDHC, SDXC up to 64GB.3. Support memory card with FAT 32 file system. Not compatible with NTFS & exFAT formats. 4. Compatible with Micro USB andriod mobile decives with OTG function. COMPATIBLE DEVICE(list is not comprehensive):Samsung Galaxy S6/S6E(+)/AlphaSamsung Galaxy S5 onlySamsung Galaxy S4 onlyNot For Samsung Galaxy S3/S5 mini/S4 miniSamsung Galaxy Note 5,4,3,2Samsung Galaxy Note EdgeSamsung Galaxy Note ProSamsung Galaxy Note 10.1 from 2014 onwardsSamsung Galaxy Note 8.0 from 2014 onwardsSamsung Galaxy Tab proSamsung Galaxy Tab S/S2Samsung Galaxy Tab 3 10.1, 8.0 (NOT FOR 7.0)Samsung Galaxy Tab 4 10.1 (NOT FOR 7.0)*Google Nexus 5/6/7/9/10 with help of third-party app such as 'nexus USB OTG file manager, ES file explorer, Nexus media importer'. Not For Nexus 7 2013 edition!*Not For?Not For HTC one M9/M8Not ForLG G4/3/2/1, G Pro 1/2Not For Moto GNot For Hudl 1/2* This kit does not support amazon Kindle & Fire tablets*Host/OTG compatible smartphones and tablets with Android operating system as of Android 4.0 and a micro USB interfaceNOTE: Never use both connections simultaneously!