Backup firmware used to recover from firmware problems.

Motherboard design containing two firmware copies or chips.

Hardware switch selecting between firmware chips or modes.

Button allowing firmware flashing without a normal boot.

Physical button used to recover or update firmware.

Jumper used to reset firmware configuration settings.

Connector used for hardware debugging or diagnostics.

Motherboard indicator displaying hardware diagnostic information.

Hardware display showing firmware startup diagnostic codes.

Small speaker used for BIOS diagnostic beeps.