WD 4TB Black My Passport Portable External Hard Drive - USB 3.0 - WDBYFT0040BBK-WESN
Brand: Western Digital
Color: Black
Auto backup with Included WD Backup Software
Password Protection with hardware encryption
Trusted drive built with WD reliability
USB 3.0 port; USB 2.0 compatible; System Compatibility: Windows 10, Windows 8.1, Windows 7; Requires reformatting for Mac OS X operating system
3 year manufacturer's limited warranty