- Capacity: 4TB - Interface: USB 3.0 - Rocker switch (hard button) to switch on/off - Nero "BackItUp and Burn Essentials" software - create your own back up from your PC/Laptop hard drive to your portable hard drive - Nero "Express" gives you the option to burn your files to CD or DVD, and with Nero RescueAgent you have an option to recover files should they become damaged - Dimensions (L×W×H): 192×118×49 mm - Product weight: 1 kg - Green Button software suspends the hard drive from spinning while not in use increasing efficiency and saving energy - There are 3 "Sleep Setting" options: * Set the suspend mode to come in after 10 minutes of use, or by increments of 10 minutes up to 120 minutes * Set the drive to suspend immediately by double clicking the Green Button icon on the desktop * Set the drive to Never Suspend the disk