
SYS-405/Configuration
v1.0
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Page 30
8.5.7 Ethernet GPIO Reference Voltage Selection (JP8)
The SYS-405 supports voltages of 3.3 V, 5 V, and 12 V.
8.5.8 Basic Input/Output System (BIOS) Programming Defaults (JP9)
If you have saved EEPROM values that prevent you from accessing BIOS menus, the
board can be reset to factory defaults as follows:
1. Turn the system off.
2. Install a jumper on
JP9
pins 2-3.
3. Turn the system on and enter the BIOS Main Menu by pressing the
F2
key. Factory
defaults will be loaded at this point.
4. Remove the jumper from
JP9
.
5. Select
Exit Saving Changes
from the
Exit Menu
.
Jumper Pin Reference
:
8.6 Switches
8.6.1 Power Button (SW1)
The Power Button (SW1), located on the lower right edge of the board next to the audio
line in/line out/microphone input, controls power to the SYS-405. The first time you
connect power to J5, the power button is bypassed and the board powers up
automatically.
After the initial power up, press SW1 briefly to power the unit on or off, depending on
the present state.
If the unit accidentally locks up and is unresponsive, press and hold SW1 for four (4)
seconds to perform a hard restart.
Jumper
Voltage
1-2
3.3 V
3-4
5.0 V
5-6
12.0 V
8
7
2
1
Jumper
Description
1-2
Normal operation
2-3
Reset EEPROM to factory default values
open
Normal operation (alternate)
1
2
3