User`s manual

NA-821 Series Network Appliance User’s Manual

Hardware and Installation

Pin Signal Pin Signal

33 GND 34 IORD#

35 IOWR# 36 VCC

37 INTR 38 VCC

39 CSEL# 40 GND

41 RESET# 42 IORDY#

43 DMAREQ 44 DMAACK-

45 LED# 46 PATADET

47 Data 8 48 Data 9

49 Data 10 50 GND

2.4.5 Front Panel Connector (CN18)

 Power LED

Pin 1, 3, 5 and 7 connect the system power LED indicator to its

respective switch on the case. Pin 1 is +, and pin 5 is assigned as

-. Pin 7 is defined as NC

 External Speaker and Internal Buzzer Connector

Pin 2, 4, 6 and 8 connect to the case-mounted speaker unit or

internal buzzer.

 Hardware Reset

Pin 11 and 12 are designed for Hardware Reset.

 HDD Activity LED

This connector extends to the hard drive activity LED on the

control panel. This LED will flash when the HDD is being

accessed. Pin 13 and 14 connect the hard disk drive and the

front panel HDD LED.

 Power Button

This 2-pin connector was designed at Pin 9 and 10.