User`s manual

NA-320 Series Network Appliance User’s Manual
Hardware Description
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connecting the CPU card to an internal buzzer, please
short pins 2-4; while connecting to an external speaker,
you need to set pins 2-4 to Open and connect the speaker
cable to pin 8 (+) and pin 2 (-).
3. ATX Power On/Off Button：
：：
：
This 2-pin connector (Pin 9, 10) connects the front panel’s
ATX power button to the CPU card, which allows users to
control ATX power supply to be power on/off.
4. System Reset Switch：
：：
：
This 2-pin connector (Pin 11, 12) can be connected to the
case-mounted reset switch that reboots your computer
instead of turning OFF the power switch. It is a better way
to reboot your system for a longer life of the system’s
power supply.
5. HDD Activity LED：
：：
：
This connection is linked to hard drive activity LED on the
control panel. LED flashes when HDD is being accessed.
The 2-pin connector (Pin 13, 14) connects the hard disk
drive to the front panel HDD LED, Pin 13 assigned as -,
and Pin 14 as +.
2.5.6 Serial Port1 (For Console) Connector (COM1)
The COM1 Port connector is a RJ-type connector.
Pin Signal
1
Data Set Ready (DSR)
2
Request to Send (RTS)
3
Ground (GND)
4
Transmit Data (TXD)
5
Receive Data (RXD)
6
Data Carrier Detect (DCD)
7
Clear to Send (CTS)
8
Data Terminal Ready (DTR)