User`s manual

NA-320 Series Network Appliance User’s Manual

Hardware Description

29 GND 30 SMB_CLK

31 N.C 32 SMB_DATA

33 N.C 34 GND

35 GND 36 USB_D-

37 N.C 38 USB_D+

39 N.C 40 GND

41 N.C 42 N.C

43 N.C 44 N.C

45 N.C 46 N.C

47 N.C 48 +1.5V

49 N.C 50 GND

51 N.C 52 +3.3V

2.5.5 Front Panel Bezel Connector (CN9)

1. Power LED：

：：

：

This 3-pin connector (Pin 1, 3, 5) connects a LED

indicator to the system power switch on the case. Pin 1 is

assigned as +, and Pin 3, Pin 5 as -. The Power LED

lights up when the system is powered ON.

2. External Speaker and Internal Buzzer Connector：

：：

：

This 4-pin connector (Pin 2, 4, 6, 8) can be connected to

the case-mounted speaker unit or internal buzzer. While