2. Supplement, or for reference, only.
It is interesting that Microsoft has applied a unique power connector that does not occur anywhere. Maybe you will be interested to know the pin out.
Double rings (external and internal) supply 'Ground' & 12 Volts. Central pins - 'ON/OFF' input, and 5 Volts 'Standby'. Just be careful with multimeter's probes checking this power supply. Do not short pins and internal rings.
In addition to the connector, it would be nice to know where and by what colors it is connected to the board. It's simple.
Out of focus - two 'status' LEDs. Additional information about the manufacturer and its part number, the same is not bad.
Next - If you want to find out what's in the middle of this power supply.
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