Front of the HP ProLiant N36L
Looking across the front of the N36L:
● A metal door, with lock
● A power button with embedded LED, and indicators for disk and network activity
● 5.25" optical disk/whatever bay
● Four USB ports
● An HP logo that glows blue when the machine is on
If you're looking for more information, I've both a hardware review and software review of the N36L.