Update: This sale has ended.

This WD My Passport 4TB portable hard drive is down to $106.99 on Amazon right now. That's about $8 off the normal $115 street price and a few bucks lower than we've reported it at before. The 3TB is currently $101, so you're essentially getting an entire extra terabyte of storage for $6. Looks like the shipping is delayed by a day or two but it's free anyway.

This is a secure hard drive with password protection and hardware encryption. It can be used as a backup device and even has WD Backup software included.

The drive is formatted to work with Windows, all the way back to Windows 7. You can use it with a Mac OS but it will require reformatting first.

See at Amazon