Sunany Metal USB Flash Drive USB 3.0 OTG Pen drive with Dual USB Connectors For Otg-functional Android Phone/PC64GB Grey Easy Data Transmission - USB OTG (On-The-Go) 2 in 1 Micro USB and ultimate high speed USB 3.0 connectors for easy data transmission of files between smartphones, tablets and computers. Easier data sharing than using online cloud services A chip ,faster and more stable .The maximum read speed of 90-120MB/s ,the maximum speed of writing 30-60MB/s file read ,film loading moment . Extra Storage - Provides additional storage for all your Android OTG mobile devices. You can backup files, photos, videos and more High-speed USB 3.0 lets you transfer a full-length movie to the drive faster than with a standard USB 2.0 drive Compatible with Windows 8, Windows 7, Windows Vista, Windows XP, Windows 2000, Windows ME, Linux 2.4 and later, Mac OS9, X and later