Product Name: OTG card reader with dual slot for mobile phone and computer USB interface: micro usb/usb Support: SD card /micro SD card Product size: 51.5 x 19 x 11 mm (L x W x H) Product weight: 11.1 G Product specification: 1. transmission interface: USB2.0 (micro USB 5pin) + USB A public 2. chipset: ITE1327 3. card slot: 2 slots (SD + micro SD) 4. transmission speed: USB2.0 transmission 480Mb/s (specification value) 5. material: ABS 6. operating system: Android version 2.3 or more, the interface as HOST function, support OTG function, smart phones and tablet 7. support PC operating system: Windows 2000, 2003, XP, Vista, 7, Mac 10.45 and more than Linux 2.4 operating system Product features: 1. small shape, easy to carry 2. USB A Gong and micro USB double plug design, support Smart Phone and PC double interface 3. no two-way transmission of data through the PC, smart phones and memory cards 4. fully meet the high-speed USB2.0 transmission protocol, the maximum transmission up to 480Mb/s. 5. blue LED, read and write flash 6. plug and play, no external power supply 7. supports high speed and large capacity SDXC, micro SDXC memory cards, up to 128GB. 8. supports SD v3.0 UHS -I specifications, the highest transmission per second 104MB 9. support Samsung Galaxy SII I9100, I9103, I9220, SIII 9300, note II 7100, HTC NEW ONE, HTC Butterfly, Sony Xperia Z, millet 2 and the market support OTG function micro USB interface smart phones and tablet 10. support memory card: A. SD / SDHC / SDXC / EXTREME SD / EXTREME II SD / EXTREME III SD/ ULTRA SD / ULTRA II SD / ULTRA II SD P PLUS SD-ULTRAX /ULTRA SPEED SD / SD PRO / SD ELITE PRO / HS SD / MMC / MMC 4 B. microSD / microSDHC / microSDXC Matters needing attention 1. some mobile phones on the market only support SDHC's highest 32GB memory card, and products use chips to support SDXC up to 2TB 2. support Android version 2.3 above micro USB interface smart phone, interface must be used as Host function 3. supports FAT32 format, NTFS format does not support. (smart phone interface) 4. see if your mobile phone or tablet supports OTG data, your phone or tablet must support OTG functionality, not all phones and tablets can support OTG functionality. Package includes:2 pc Note:We don't offer color choice, please make sure you don't mind before you buy.