This package contains the Dell System BIOS update. It is supported on Dell Latitude 5491, 5591 and Precision 3530 systems that run Windows operating system. BIOS is a firmware that is embedded on a small memory chip on the system board. It controls the keyboard, monitor, disk drives and other devices. The package also addresses Intel security advisories. The security advisory is an official statement when a product is impacted by a security vulnerability and a remedy is available.