Asus KFN4-DRE - Manual (Page 48)

2-28 Chapter 2: Hardware information
10. Power Supply SMBus connector (5-pin PSUSMB1)
This connector allows you to connect SMBus (System Management
Bus) to the power supply unit to read PSU information. Devices
communicate with an SMBus host and/or other SMBus devices using
the SMBus interface.
11. Parallel port connector (26-1 pin LPT1)
This connector is for a parallel port. Connect the parallel port module
cable to this connector, then install the module to a slot opening at
the back of the system chassis.
R
KFN4-DRE
KFN4-DRE Power Supply SMBus Connector
PSUSMB1
+3.3V Remote Sense GND NC PSU_I2CDA
TA
PSU_I2CCL
K
R
KFN4-DRE
KFN4-DRE Parallel Port Connector
LPT1
STB#
AFD
PD0
ERR#
PD1
INIT
#
PD2
SLIN#
PD3
GND
PD4
1
GND
PD7 PD6 PD5
GND GND GND
ACK#
GND
BUSY
PE
SLCT
GND GND