Toshiba HDDR640E04XK 640GB USB 2.0 Portable External Hard Drive Blk Our drives take the complexity out of backing up your computer data by providing easy to use backup software for both Windows and Mac users. Powered by USB 2.0, you can take your files just about anywhere. Just one click and you are on your way to creating a digital safety net to help protect your files. With Toshibas Portable External Hard Drives, you will enjoy mobile storage space for even the largest digital libraries. Our 640GB1 Drive is capable of storing up to 182,000 digital photos, or 168,000 digital music files, or 520 downloaded digital movies. Toshibas Portable External Hard Drives work with both Mac and PC computers and include software that makes backing up your computer simple. Windows users File and folder backup or complete system backup, its your choice. The included NTI Backup Now EZ software takes the mystery out of what to backup by scanning your system and recommending the best coverage for your computer. Choose between backing up your files and folders, backing up everything on your hard drive, or choose both for the most comprehensive coverage. The Drive Space Alert will monitor your Toshiba drive and let you know when it is getting full. Recovering a file or your entire computer is simple. Click the restore button and you can recover a file or folder, boot to your Toshiba Portable External Hard Drive and it will restore your entire computer. We have even included a utility to burn a boot CDDVD to make the process even simpler. Mac users backing up your Macs most important data is easy with NTIs Shadow 4 for Mac. Just select the files you want to backup, how often your backup takes place and you are covered. We have even included sync a new feature for Shadow, so you can keep your files synchronized between different Macs. The Drive Space Alert will monitor your Toshiba drive and let you know when it is getting full.Recovering a file or a fold