Newegg offers the Seagate 2TB Expansion Portable USB 3.0 External Hard Drive, model no. STBX2000401, for $84.99. Coupon code "EMCASAT26" cuts it to $79.99. With free shipping, that's the lowest total price we could find by $5, although we saw it for $11 less via pickup three weeks ago. This drive is completely USB-powered. Deal ends May 7.