Generic gfrrs 2.0 USB Y Charger Data Cable Cord for Portable Hard Drive HDD Connectors: one end with USB mini B male, the other end with 2 USB A male---one for strengthening power supply and one for data transfer It is a good replacement of or spare part for the original data and power supply cable of the external drive 2-in-1 feature: depending on your device's specifications, this cable connects your external hard drive/external HDD to a USB-ready notebook/laptop or USB hub for powering the device and transferring data. This is especially important for HDD with big capacity, since without the additional power, the HDD may malfunction or lead to connection frozen. USB 2.0 Data and Power Charger Cable/Lead for EMC Iomega Portable Hard Drives HDD