Newegg offers the Seagate 2TB Backup Plus USB 3.0 Portable Hard Drive in Silver, model no. STDR2000101, for $89.99. Coupon code "EMCKNNW25" cuts that to $79.99. With free shipping, that's the lowest total price we could find by $5, although we saw it for $12 less last month. This drive is compatible with Windows and Mac and features an 18" USB cable and pre-loaded backup software. Deal ends December 29.