Summary of Western Digital My Book (WDBACW0040HBK)
USB 3.0 and USB 2.0 compatibility: USB 3.0 and USB 2.0 compatibility. With this single drive you get compatibility with your USB 2.0 devices today and the ultra-fast speed of USB 3.0 when you're ready to step up to the next generation. Up to 3x faster transfer rates: When connected to a USB 3.0 port, My Book lets you access and save files with blazing speed. Reduce transfer time by up to 3 times when compared to USB 2.0 transfer rates. Automatic, continuous backup software: Backup means having a second copy of your files at all times. WD's automatic backup software makes that easy. It continually works quietly in the background to help protect your data while using minimal PC resources. Whenever you save or change a file, it's instantly backed up.