This USB-powered flash drive runs before your Windows system boots and therefore, before viruses and malware can start working. This gives it the power to sweep your system clean and prevent the spread of infection No software installation, conflicts, passwords, or slow down to your computer Easy-to-use USB device works with Windows XP, Vista, 7, 8, 8.1, 10, 11 (10S see Getting Started Guide: Start from BIOS) Removes viruses, spyware, Trojans, and other types of malware Works with your existing antivirus software Can be uses on 3 devices for a period of 1 year Updates automatically using your home network (internet connection required)