My favorite 555 use was as a one-shot to power off a NIC after using its wake-on-LAN signal to reset a hung motherboard: https://www.i3detroit.org/reset-on-lan

My favorite 555 use was as a one-shot to power off a NIC after using its wake-on-LAN signal to reset a hung motherboard: https://www.i3detroit.org/reset-on-lan-an-ethernet-aware-remote-reboot-device-from-junkbox-parts/ https://www.i3detroit.org/reset-on-lan-an-ethernet-aware-rem...