... Simple and elegant, beautiful industrial design;·Super Speed 3.0, up to 100MB/s in write, ... PowerBook computer with an available USB 2.0/3.0 port. Product Specifications:·Controller Chip: GL3310;· ... Black;·Enclosure Material: Stainless Steel;·Data Interface: USB 3.0 and USB 2.0;·HDD Rotational Speed: ... , 250GB, 320GB, 500GB, 640GB;·Accessories: 1 USB 3.0 Data Cable, 1 carrying pouch, 1 user manual ...