Introduction; Switches Setting; Clear/Cmos -Clear Cmos Data - JHCTech KMDA-3921 User Manual

2.1 Introduction

The following sections show switches settings and the external connectors and pin assignments for
applications.

2.2 Switches setting

The KMDA-3921/3920/3610 Box Computer has a number of switches that allows you to configure your
system to suit your application. The table below shows the function of each of the board's Switches:
Switches
Jumpers/Switcher
CLEAR/CMOS Clear CMOS Data Setting
AT/ATX Set Power-on mode at AT or ATX

2.2.1 CLEAR/CMOS -Clear CMOS Data

If you encounter the followings
a) CMOS data becomes corrupted.
b) You forget the supervisor or user password.
you can reconfigure the system with the default values stored in the ROM BIOS.
To load the default values stored in the ROM BIOS, please follow the steps below.
1. Power-off the system and unplug the power cord.
2. Set CMOS pins 2 and 3 to On. Wait for a few seconds and set CMOS back to its default setting,
pins 1 and 2 On.
Name
Figure 2. 1
13
User's Manual
Description
3-Pin Switch
3-Pin Switch