EZOPower 2 Pack Micro-USB 3.0 Cable, High Speed Sync & Charge Cable - Black, 3FT for Portable / Desktop External Hard Drives and Smartphone High performance Micro USB 3.0 cable connects a portable external USB 3.0 hard drive to a computer for speedy file transfer or synchs and charges Samsung Galaxy S5, Note 3 Smartphone USB 3.0 technology provides transfer rate of 4.8 Gbps, 10 times the capacity of USB 2.0 (480 Mbps). Provides the ability to connect your device to your computer/laptop pc. PC and Mac compatible. Backwards compliant with high speed USB 2.0 devices and USB 1.1. Compatible with Samsung Galaxy S5, Galaxy Note 3, and USB 3.0 external hard drives including Toshiba Canvio, WD My Passport Ultra / Ultra Metal Edition / Essential / WD Elements / My Passport X Gaming Storage, Seagate Expansion/ Backup Plus Slim, Game Drive for Xbox, HGST Touro S, Touro Mobile/Mobile Pro Portable External Hard Drives and WD My Book, Seagate Expansion Desktop External Hard Drive