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102 Appendix B: Technical reference
Chassis fan power-supply connectors
The chassis fan power-supply connectors are 4-pin standard, 2 mm male fan
power-supply connectors. They provide power to the fans inside the Matrox
Supersight chassis.
The pinout for the unit's fan power-supply connector is as follows:
Pin
Voltage
1
Ground.
2
Power 12 V. It is recommended not to draw more than 1 A in total.
3
Reads the speed of the fan (TACH).
4
Sets the speed of the fan, using pulse-width modulation (PWM).
LED, system reset, and power connectors
The LED, system reset, and power connectors are each 2-pin standard, right-angle,
2 mm, male connectors. Each of these connectors connect to the LEDs on the
chassis. If one or more LEDs or buttons on the chassis fail to operate, technical
support might ask you to verify that the connections are properly made.
The LED, system reset, and power connectors provide the following functions:
• The power LED connector connects to a LED on the front panel. This LED
indicates whether the first
1 2 3 4
*
SHB is receiving power.
edge of
backplane
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