1U disk is a USB 2.0 interface, compatible with USB 2.0 and 1.1 ports, it can be used to store different files, transfer quickly, and save time. 2A memory stick used to store music, photos, documents, movies, pictures, books, programs, presentations, designs, etc. 3Lightweight and portable, the metal keychain design allows you to easily connect the USB flash drive to the key or lanyard for easy carrying. 4Plug and play, no need to install any software, just insert the U disk into the computer USB port or other devices with USB port to work. 5Compatible with most systems, such as for Window2003/XP/Vista/7/8/10/for OS X/Linux. Item Type: Flash Drives Material: Metal + ABS Interface: USB2.0 (Compatible with USB 1.1) Supported Operating System: For Window2003/XP/Vista/7/8/10/for OS X/Linux Applicable Equipment: Computer, Car, BT Speaker, TV and Other Devices That Support USB Expansion 1 x USB Flash Drive 1 x Keychain