ZHOUYAJING External Hard Disk - 5400rpm 640GB 2.5-inch HDD

Name: External Hard Drive Capacity options: 80GB, 120GB, 160GB, 250GB, 320GB, 500GB, 750GB, 1TB Color: black, white (optional) USB interface: USB 3.0 Disk speed: 5400rpm Disk cache size: 8MB Cache: 8MB. Hard disk indicator: Yes Average search time: 12 milliseconds Support system: 98SE, ME, 2000, XP, Vista, WIN7, WIN8, win10 Hard disk size: 2.5 inches Packing list: 1 *Portable hard drive 1 * USB 3.0 cable 1 *User Manual About capacity: The supplier of the hard disk/flash memory uses the decimal algorithm: 1MB = 1000KB, and calculates 1G = 1000MB, but the operating system uses the binary algorithm: 1MB = 1024KB, 1GB = 1024MB. Therefore, there will be some differences between the display capacity and the rated capacity of hard disk/flash memory products. However, it is allowed to exist. Please don't doubt his authenticity. 80GB = about 74GB 120GB = about 111GB 160GB = about 149GB 250GB = about 232GB 320GB = about 298GB 500GB = about 465GB 750GB = about 696GB 1TB = about 930GB 2TB = about 1860GB note: 1. Due to the difference in lighting and screen, the color of the product may be slightly different from the image. 2. As manual measurement is required, please leave a space of 1-3 cm.