KTD-N0882-I Page 49 Internal Connectors
7.11 Feature Connector (Feature) (J1)
Notes: 1. Pull-up to +3V3Dual (+3V3 or SB3V3). 2. Pull-up to on-board Battery. 3. Pull-up to +3V3. 4. Not
Available. 5. Not available on mITX, Shared with onboard FAN2 on Flex.
Signal Description
CASE_OPEN#
CASE OPEN, used to detect if the system case has been opened. This signal’s status is
readable, so it may be used like a GPI when the Intruder switch is not required.
SMBC SMBus Clock signal
SMBD SMBus Data signal
S3#
S3 sleep mode, active low output, optionally used to deactivate external system.
S5#
S5 sleep mode, active low output, optionally used to deactivate external system.
PWR_OK
PoWeR OK, signal is high if no power failures are detected. (This is not the same as the
P_OK signal generated by ATX PSU).
(EXTernal BATtery) option for connecting + terminal of an external primary cell battery (2.5
terminal connected to GND). The external battery is protected against charging
and can be used with/without the on-board battery installed.
FAN3OUT FAN 3 speed control OUTput, 3.3V PWM signal can be used as Fan control voltage.
FAN3IN FAN3 Input. 0V to +3V3 amplitude Fan 3 tachometer input.
FAN4OUT FAN 4 speed control OUTput, 3.3V PWM signal can be used as Fan control voltage.
FAN4IN FAN4 Input. 0V to +3V3 amplitude Fan 3 tachometer input.
SB3V3 Max. load is 0.75A (1.5A < 1 sec.)
SB5V StandBy +5V supply.
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