Supports hot plug & play, High speed for Apple interface/Type-C/Micro-type/USB3.0 port . No physical drive required Plug-and-play; no external power supply required, USB bus-powered Support all current computer systems speeds vary depending on types of file being transferred and computer configuration. Interface USB 3.0 Excellent USB Memory stick in excellent condition Operating temperature: -10 to +55 degrees Celsius Storage temperature: -20 to +55 degrees Celsius Life: Greater than 1 million times About capacity: 256GB=approximately 220.0GB-240.0GB Vendors are using Flash memory decimal arithmetic: 1 MB = 1000KB, 1G = 1000 MB Calculated, operating system with binary arithmetic: 1 MB = 1024KB, 1 GB = 1024 MB; So there are some differences between display capacity and nominal capacity of flash memory products Attention: To avoid data loss or mechanical damage, do not power down your computer or unplug flash disk during transfer. Please do not remove your USB flash drive when it is being used otherwise your datamay loss. After using USB flash drive, it is better to remove it from device as soon as possible. That willhelps to extend its storage lifetime. Please do not format your USB flash drive frequently, otherwise the USB will bedamaged easily. Color: Silver Material: Metal Package Contents: 1 * Rotating 4-in-1 USB flash drive