Original WD 4TB 2TB 1TB External Hard Drive HDD 2.5" Hard Disk Western Digital Type-C My Passport Ultra Encryption WD HDD

Specifications: Hard Drive Type:2.5" HDD Capacity:1TB/2TB Disk Rotational Speed:5400rpm Warranty:3 Years Support system: For MAC OS 10.6.2,Linux,Windows XP/Vista/7/8/10,Andriod(smart TV) Package includes: 1* USB 3.1 External Hard Drives 1TB/2TB 1* USB 3.1 Cable About capacity: Hard disk/flash memory vendors are using decimal arithmetic: 1MB=1000KB, 1G=1000MB calculated, but the operating system is using binary arithmetic: 1MB=1024KB, 1GB=1024MB. So there are some differences between display capacity and nominal capacity of hard disk/flash memory products. However, this is allowed to exist. Please do not doubt his authenticity. 80GB=about 74GB, 120GB=about 111GB, 160GB=about 149GB, 250GB=about 232GB, 320GB=about 298GB, 500GB=about 465GB, 1TB=about 930GB,1.5TB=about 1395GB, 2TB=about 1862GB