Amazon.co.jp: BUFFALO BSH4U305U3BK External Hard Drive 4TB HD-AD4U3 for USB 3.1 (Gen 1) / USB 3.0 + BUFFALO USB 3.0 Bus Power, 4-Port Hub, Magnet, Black : Computers
Amazon.co.jp: BUFFALO HD-SH4TU3 External Hard Drive for Business 1 Drive Model 4TB : Computers