Power Supply
16
– Reference
VSBC-8 Reference Manual
Power Supply
P
OWER
C
ONNECTORS
Main power is applied to the VSBC-8 through an EBX style 7-pin polarized connector (mating
connector Molex Housing 09-50-8073, Pins 08-52-0072). A 3-pin auxiliary power input
connector is also provided to supply –5V and –12V to the PC/104-
Plus
stack.
See page 11 for connector pinout and location information.
Warning!
To prevent severe and possibly irreparable damage to the system, it is critical that
the power connectors be wired correctly. Make sure to use both +5VDC pins and
all three ground pins to prevent excess voltage drop.
Table 3: Main Power Connector Pinout
J9
Pin
Signal
Name
Description
1
+5VDC
Power Input
2
Ground
Digital Ground
3
Ground
Digital Ground
4
+12VDC
Power Input
5
+3.3VDC
Power Input
6
Ground
Digital Ground
7
+5VDC
Power Input
Note!
The +3.3VDC and +12VDC inputs on the main power connector are only required
for PC/104-
Plus
expansion modules that require these voltages.
Table 4: Auxiliary Power Connector Pinout
J3
Pin
Signal
Name
Description
1
–5VDC
Power Input
2
Ground
Digital Ground
3
–12VDC
Power Input
Note!
The Auxiliary Power Connector uses VersaLogics CBL-2021 Power Adapter
Cable. Auxiliary voltages are only required for PC/104-
Plus
expansion modules
that require these voltage.
