www.dfi.com
14
Chapter 3 Hardware Installation
Chapter 3
Jumper Settings
Clear CMOS Data
If you encounter the following,
a) CMOS data becomes corrupted.
b) You forgot 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 JP1 pins 2 and 3 to On. Wait for a few seconds and set JP1 back to its default setting,
pins 1 and 2 On.
3. Now plug the power cord and power-on the system.
JP1
2-3 On:
Clear CMOS Data
1-2 On:
Normal (default)
3
1
2
3
1
2
COM RS232/RS422/RS485 Select
SW4 (for COM2) is used to configure the COM port to RS232, RS422 (Full Duplex) or RS485.
JP7 is used to configure the COM port set via the hardware mode or software mode.
Note:
If you use the SW4 to select RS232/ RS422/ RS485, make sure JP7 is set via the
“Hardware Mode”.
12
10
3
1
1-4-7-10, 2-5-8-11 On:
Software Mode (default)
2-5-8-11, 3-6-9-12 On:
Hardware Mode
12
10
3
1
RS232/RS422/RS485 Select: COM (SW4)
RS232
1 On, 2-3 Off
RS422
1,2 On, 3 Off
RS485
2 On, 1,3 Off
SW4
JP7
COM:
RS232/422/485
