Kindly Customer Services please feel free to contact us if you have any problem on our usb keys, we will do our best to solve your problem, the customer is the first position in our heart. We are always behind our products and customers to make sure that you are all fully satisfied.Large Compatibility The USB 3.0 Connector is compatible with USB 3.0 & USB 2.0 backwards USB 1.1 devices, such as Laptop, Desktop, Car Audio, Tablet, TV, Speakers, Projector. USB-C port is compatible with all Android Smartphones, such as Samsung S9 / S8 / S8 + / S10 +, Huawei P20 / P20 Lite / P10 / P10 Plus / Mate 10 / Xiaomi Mi A1 / Mi 5 / Mi 5S / 5S Plus / Mi 6 / Mi Max 2 / Mi Mix 2, HuaweiHigh Speed up to 90 MB/SRead speed: up to 90 MB / s, Write speed: up to 30 MB / s, the speed of usb 3.0 interface is 10 times faster than usb interface 2.0, save time to wait, increase work productivity. *Note: Speed will be limited if you use the usb key in the usb 2.0 interface2 in 1 : USB C + USB 3.032 gb/64GB/128GB usb c flash drive has dual ports, usb 3.0 port is applied to all devices which have usb 3.0 interface and usb c port is widely used in all Android smartphones with OTG function, such as Samsung, Huawei, Xiaomi. You can transfer easily data bewteen different devices* Note: Make sure your smartphone is equipped with OTG function and need to open OTG function in Settings when you plug memory stickExpand Storage Good performance in storing, transferring and sharing digital data with families, friends, colleagues, customers. It can expand the capacity of your smartphone, you can watch movies or take pictures when you go on vacation with your family and friends.