Asus P4B533-V manual Serial port 2 connector 10-1 pin COM2, System panel connector 20-pin PANEL1

18.Serial port 2 connector (10-1 pin COM2)

This connector accommodates a second serial port using an optional serial port bracket. Connect the bracket cable to this connector then install the bracket into a slot opening at the back of the system chassis.

P4B533-V

COM2

PIN 1

P4B533-V Serial COM2 Bracket

19.System panel connector (20-pin PANEL1)

This connector accommodates several system front panel functions.

Keyboard Lock		Speaker
Power LED		Connector
			Ground Ground Speaker
+5 V	PLED Keylock Ground	+5V
+5 V	MLED ExtSMI# Ground PWRBIN Ground		Reset Ground
P4B533-V
MessageLED			Reset SW
		ATX Power
SMI Lead
		Switch*
* Requires an ATX power supply.

P4B533-V System Panel Connectors

•System Power LED Lead (3-1 pin PLED)

This 3-1 pin connector connects to the system power LED. The LED lights up when you turn on the system power, and blinks when the system is in sleep mode.

•Keyboard Lock Lead (2-pin KEYLOCK)

This 2-pin connector connects to a chassis-mounted switch to allow the use of the keyboard lock feature.

ASUS P4B533-V motherboard user guide 2-33