Specifications: Interface Type: USB 3.0Capacity:32GB/64GB/128GBMaterial: Metal + ABS plasticColor: BlackConnector Type: USB Type-AProduct Weight: 0.07oz/ 2gProduct size: 0.79*0.61*0.29 in/ 20.1*15.4*7.4mmLanyard size: 4*175mmCompatibility: Most PC, Mac laptop and desktop computers Features: Comes with a lanyard: There is a eyelet hole in the drive head for a small string to attach, which makes it more obvious to be noticed, so that you can track it and won't easily misplace or even lose it.Mini design: You won't bother to insert and eject this USB drive back in forth, since it's such Mini and could stay plugged in and doesn't interfere with any case or bag, you can totally carry it around anywhere as an extension storage to your devices.A powerful backup solution: With 32GB, 64GB, 128GB storage capacity for you to select. For one 64GB USB drive, it can hold over 3600+ 10 megapixel photos, 160 minutes+ 1080P video, 4000+ songs and 16GB office files. USB 3.0 High Transfer Speed USB 3.0 memory stick with reading/write transfer speeds up to 100MB/s and 30MB/s respectively. Transfer speeds up to ten times faster than a standard USB 2.0 drive. Super Mini Super mini body is a popular trend. The extremely mini, compact and portable USB memory stick comes with a lanyard for easy transport. Plug & Play No need to install any software, this pen drive can be used easily. Pen drives are suitable for storing, transferring and sharing digital data. Save data in the form of music, photos, movies; MP3, MP4, RMVB, EXCEL, WORD, PDF, etc. FQA About the capacity: The manufacturer's factory capacity is calculated based on 1MB = 1000KB, 1G = 1000MB, while the operating system adopts a binary algorithm, i.e. 1MB = 1024KB, 1GB = 1024MB. Therefore, the display capacity of flash memory products is about 90% of the rated capacity, which is a normal phenomenon. About the speed: Speed results for different conditions, using the software, the copy file type is different, the speed measurement results are also different! USB stick can't copy multiple 4G files? Usually the system defaults to a single 4GB file on the fat32 disk system. If you need to store a single file such as an HD video that is larger than 4GB, it is recommended to reformat it and set it to the exFAT file system. (Formatted with win7 and higher operating systems) How to format the drive or device using disk management? Connect the USB key, memory card or card reader to the PC -> Open the computer management console -> Open the computer management console -> In memory, click on disk management in the left panel -> Format device My USB key is not detected when connected to my PC. What should I do? Check if the minimum operating system requirements are met. Operating systems supported by the drives: Windows Vista, Windows 7 and later, Windows XP SP2, Windows 2000 SP4. -> Try other USB ports. If the player does not get enough power from the USB port, it will not work properly. Some desktop computers may need to use the USB ports on the back of the computer. -> Check the status of the secondary device manager.