Power to systems utilizing the Pandora Enclosure may be provided by either a 5v supply, such as a traditional AT-style or ATX-style power supply, or by a variable voltage DC supply. In either case, the power supply interfaces to the enclosure through a 4-pin Mini-Fit type connector on the front panel.
When using a 5v input, the power input must be on pin 1. When using a variable voltage input, the power input must be on pin 4.
The Pandora Enclosure has a provision for an optional On/Off power switch at the bottom right hand corner of the front panel. The Pandora Enclosure is shipped with the power switch enabled. That means that the system will boot when power is applied and the power switch is turned to the On position. To disable the power switch, users must perform two tasks, described below. (The tasks differ slightly depending on whether the enclosure is powered by a 5v supply or by a variable voltage DC supply).
Note that the power switch does not operate like the switch on an ATX-style PC. The switch controls all power to the system. No sustaining or standby voltage is supplied when the system is off. A soft-off through the operating system does not shutdown the power supply to the system.
The Pandora Enclosure provides two methods of powering the CPU board.
When a 5v input is used, either of these two provisions may be selected. When a variable voltage input is used, power must be routed to the DC/DC supply board.
For the direct CPU power connection, simply supply 5v through the front panel power connector. Power is supplied to the CPU board directly.
To power the system through a DC/DC power supply board in the stack, you must cable from either the J34 or J35 connector to the power supply board. The connectors differ only in their interface. Choose the connector most appropriate to the power requirements of the DC/DC board and the amount of current you are supplying.