Asus TS300-E8-PS4 - Manual (Page 65)

ASUS TS300-E8-PS4 4-9
3. CPU Warning LED (ERR_CPU1)
The CPU warning LED lights up to indicate that a CPU error or failure has
occurred.
4. Power LED (+5V_LED1)
This LED lights up when the Power-on button is pressed and the system is
on.
- The heartbeat LED functions only when you install the ASUS ASMB7
Management card.
- Everytime after the AC power is replugged, you have to wait for about 60
seconds for the system to power up.
The warning LED functions only when you install the ASUS ASMB7
Management card.