DIP Switches

The backplane has a DIP switch that may be used to control chassis behavior.

DIP switch #1 (first from the left) controls the chassis fan mode. When this switch is in the off (down) position, Auto mode is selected. When this switch is in the on (up) position, High mode is selected.

DIP switch #2 (second from the left) controls the chassis Inhibit Mode. When this switch is in the off (down) position, Default mode is selected. When this switch is in the on (up) position, Manual mode is selected.

Figure 4. Backplane DIP Switches


  1. Switch #1 (Fan)
  2. Switch #2 (PWR)
  3. Switch #3 (NC)
  4. Switch #4 (NC)
Table 3. DIP Switch States
Location Switch State Description
1 FAN Off (Right) Sets chassis Fan Mode to Auto.
On (Left) Sets chassis Fan Mode to High.
2 PWR Off (Right) Sets chassis Inhibit Mode to Default.
On (Left) Sets chassis Inhibit Mode to Manual.
3 NC — —
4 NC — —