WD Security SW

to enable password protection and enable hardware encryption with WD portable drives
need to install and run this software

Software and Firmware Downloads | WD Support

WD Security

WD My Passport External Portable Hard Drive HDD (1 TB to 5 TB) | Western Digital

Amazon.com: WD 5TB My Passport Portable External Hard Drive HDD, USB 3.0, USB 2.0 Compatible, Black - WDBPKJ0050BBK-WESN : Electronics