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Little Board™/486e Technical Manual
2–56
Table 2–42. Utility Connector (J16)
Pin Signal Name Function
1 -12V power Connect external –12V supply here for distribution to
expansion cards needing this voltage
2 Ground Ground return
3 -5V power Connect external –5V supply here for distribution to
expansion cards needing this voltage
4 Ground Ground return
5 LED Anode LED current source (+5V through 330 ohms)
6 EXSMI External SMI
7 Speaker + PC audio signal output
8 Ground Ground
9 Reset To one side of the manual reset button
10 N/C No connection
11 Kbd Data Keyboard serial data
12 Kbd Clk Keyboard Clock
13 Ground Keyboard ground
14 Kbd Power Keyboard +5V power
15 BATV + External battery +
16 BATV- External battery -
Table 2–43. J16 Mating Connector
Connector Type Mating Connector
Ribbon 3M 3452-7600
Discrete Wire MOLEX Housing 22-55-2162
Pin 16-02-0103