E-7
Appendix E: SAS2-846EL Backplane Specifications
*The buzzer sound indicates that a condition requiring immediate attention has
occurred.
The buzzer alarm is triggered by the following conditions:
1. Hard drive failure
2. Fan failure
3. System temperature over 45º Celsius.
General Jumper Settings
Jumper
Jumper Settings
Note
PRI_MODE1 and 2
2-3
Factory Setting
Do not change
SEC_MODE1 and 2
2-3
Factory Setting
Do not change
EXPDBG1 and 2
No jumper required
Debug, SMC internal use only.
(EXPDBG2 not present on
SAS2-846EL2)
MDI01 and 02
No jumper required
SMC internal use only
UART_P1
No jumper required
Primary UART connector
UART_S1
No jumper required
Secondary UART connector
(Not present on SAS2-847E2)
JP1
No jumper required
Buzzer connector
BUZZER_ENB1
Open: Disabled (Default)
Closed: Enabled
Buzzer settings*
ACTLED1
Open: Disabled (Default)
Closed: Enabled
Activity LED settings
FAN_MONITOR_DIS-
ABLE
Open: Disabled (Default)
Closed: Enabled
Fan monitor LED settings
Front LEDs
LED
State
Specification
FANFAIL1
On
Fan failure
OVERHEATFAIL1
On
Overheat/Drive Failure LED Indicator
(Red light: flashing, buzzer: on)
