90
LED Name
Function
Location
Color
Notes
on state
Power LED
Identify
system power
state
Control panel
(on button)
Red
Off = power off
(ACPI S4 or S5)
On = power on (ACPI
S0)
Slow blinking = low
power state (ACPI
S1)
NIC1 and NIC2
LEDs
Identify NIC
state and
speed
Left and
right sides
of RJ45
connector
Left LED
can be
off,
green,
amber
Right
LED,
green
Off = 10 Mbps
Green = 100 Mbps
Amber = 1000 Mbps
Green on = active
connection
Green blinking =
transmit/receive
activity
BIOS POST Beep Codes
lists the POST error beep codes. Prior to system video initialization, the
BIOS uses these beep codes to inform users of error conditions. Please note that not
all error conditions are supported by BIOS beep codes.
Table 8. POST Error Beep Codes
Number of
Beeps
Reason for the Beeps and Action to Take
1, 2, or 3
Memory error. Reseat the memory or replace the DIMMs
with known good modules.
4 – 7 or 9 –
11
Fatal error indicating a possible serious system
problem. Remove all add-in cards and re-start the
system. If the error still occurs, contact your
system manufacturer. If the beep codes are not
generated after the add-in cards are removed, insert
the cards one at a time, booting the system between
each card addition, until the beeps again occur to
reveal the malfunctioning card.
8
Replace or reseat the system video add-in card. If
on-board video is being used, the server board may be
faulty.
In addition to the beep codes above, additional beep codes are provided if an Intel®
Remote Management Module (RMM) is installed. The RMM provide the following additional
beep codes: