Motherboard firmware (including BIOS and UEFI) can be updated using USB flash drives. The feature was controlled by the CPU, motherboard BIOS, and operating system. Anti-virus software is not effective at protecting firmware and the motherboard BIOS from infection. The ROM BIOS supported cassette operations. Cartridges can also replace the system BIOS and other firmware. Motherboards with them might be Pentium D compatible with an updated BIOS. The VGA BIOS implementation comes from Plex86/Bochs. All Chromebooks, except the first three, boot with the help of Coreboot, a fast-booting BIOS. The user can select the boot priority implemented by the BIOS. Servers in this generation support both BIOS and UEFI. The second payload tries to write to the Flash BIOS. Otherwise the interrupt may fail with some BIOS or hardware versions. It was created by using the MIL-CD security hole found in the Dreamcast BIOS. In 1984, Phoenix Technologies began licensing its clone of the IBM PC BIOS. EFI is a specification which replaces the runtime interface of the legacy BIOS.