1Portable external hard drive provides enough storage space for your music, movies and other files. 2Portable additional storage device powered by USB 3.0, compatible for OS X/XP/Win7/ Win8/Win10/Linux. 3Plug and play, no need to install software, suitable for notebooks, allinones, desktop computers. 4Convenient to use and with good performance, with small size, easy to carry and store. 5There are 80G-2TB various specifications, you can choose according to your different needs. Item Type: Mobile Hard Drive Model: GK18 Cache: 8MB Interface: USB3.0 Speed: 50-130M/S Operating Temperature: 0~75 Operating Voltage: 5V5% Applicable System: For OS X/XP/Win7/ Win8/Win10/Linux Application Scenarios: Notebook, all-in-one, desktop computer Operating Power Consumption: 3W-5W 80G 5400 transfer 50M/S read 80M/S 120G 5400 transfer 50M/S read 80M/S 160G 5400 transfer 70M/S read 80M/S 250G 5400 transfer 90M/S read 95M/S 320G 5400 transfer 90M/S read 95M/S 500G 5400 transfer 100M/S read 110M/S 1T 7200 transfer write 90M/S read 130M/S 2T 7200 transfer write 90M/S read 130M/S How to Use: Use the USB cable to insert the mobile hard disk, connect the other end to the computer or other equipment, and then click the U disk icon on the desktop of the computer, then you can copy the files in the hard disk or copy the files in the computer into the mobile hard disk. After completion, click the U disk icon on the desktop, right-click and selectpop-up to disconnect. (with a USB toUSB cable) 1 x Hard Disk 1 x Connecting Line 1 x Storage Bag