Acrosser AR-R5800A - Manual (Page 15)

AR-B5800A User Manual
28. SYS_FAN1 (System FAN connector 1). 29. RTC1
PIN SIGNAL
1 GND
2 +12V
3 Fan speed data
CMOS Backup Battery:
An onboard battery saves the CMOS
memory to keep the BIOS information
stays on even after disconnected your
system with power source.
Nevertheless, this backup battery
exhausts after some five years.
Once the error message like “CMOS
BATTERY HAS FAILED ” or “CMOS
checksum error ” displays on monitor,
this backup battery is no longer
functional and has to be renewed
30. JP1 (For LAN1/LAN2 Bypass Function
Select.). 31. CCMOS1.
Pins 1 and 2 shorted
(Default): Forced Normal .
Pins 2 and 3 shorted:
Controlled By CPLD.
Otherwise : Forced Bypass
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