Newegg offers the Samsung P3 4TB USB 3.0 Portable External Hard Drive, model no. STSHX-MTD40EF, for $179.99. Coupon code "EMCAVNK85" drops it to $159.99. With free shipping, that's the lowest total price we could find by $70. It features SafetyKey data protection and transfer speeds of up to 5Gb/s. Deal ends July 27.