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15. 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-VM
P4B533-VM Serial COM2 Bracket
16. System panel connector (20-pin ASUS_PANEL1)
This connector is for various system front panel features. See the
description of each feature below.
P4B533-VM
P4B533-VM 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.
• System Warning Speaker Lead (4-pin SPEAKER)
This 4-pin connector connects to the case-mounted speaker and
allows you to hear system beeps and warnings.
2-28
®
®
COM2
PIN 1
Keyboard Lock
Power LED
Message LED
SMI Lead
Requires an ATX power supply.
*
Chapter 2: Hardware information
Speaker
Connector
Reset SW
ATX Power
Switch*
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