Seagate Expansion HDD Drive Disk 500GB 1TB USB3.0 External HDD 2.5"

Interface Rate : 6Gb/s Shell Material : ABS Launch Date : Feb-15 Has External Power Supply : No Expansion Port : USB PLUS Cache : 8MB Products Status : STOCK Application : Desktop,Laptop,Server Interface Type : USB 3.0 Size : 2.5 #34; Model Number : Expansion Package : Yes Speed : 5400rpm HDD Capacity : 1TB Brand Name : Seagate Style : HDD Type : External Model 500GB : SATA2-3Gb/s-8MB Cache Model 1TB : SATA3-6Gb/s-128MB Cache Specifications: Brand: Seagate Name: Seagate Expansion Storage capacity: 500G, 1TB (optional) Connection: USB 3.0 Hard drive size: 2.5 inches Max transfer rate: 120MB/s Item size: 11.7 * 8.0 * 1.48cm / 4.60 * 3.14 * 0.58in (L * W * H) Item weight: 170g / 5.99oz Package size: 14.5 * 10.5 * 3.2cm / 5.70 * 4.13 * 1.25in (L * W * H) Package weight: 207g / 7.30oz Package List: 1 * Portable hard drive 1 * USB 3.0 cable 1 * User manual (22 languages) Please note: Product needs to be reformatted if it is to be used with Mac. Reformatting the drive will erase all content unless it is backed up to another drive. About capacity: Since the calculation units of hard disk manufacturers and computer operating systems are different, the capacity display will be different. When producing hard disks, the capacity is calculated according to 1G = 1000M = 1000 * 1000K = 1000 * 1000 * 1000BYTE. However, the computer operating system is binary and calculated according to 1G = 1024M = 1024 * 1024K = 1024 * 1024 * 1024BYTE. For example: The actual capacity is the marked capacity of the hard disk 1000G / 1.024 / 1.024 / 1.024 = 931G (1000 1.024 1.024 1.024), so the display capacity of a 1TB hard disk is 931G. Easy and simple to use - plug it in and g