24 pin power connector and 20 pin power supply

[lideho]

I am working on a Compaq with a 24 pin connector on the motherboard and it is using a power supply with a 20 pin connector. Is there a possibility of portions of the mobo not being serviced or underserviced by the power supply?

 

[firewolfrl]

Some motherboards work with either connector.
If it came stock that way it will work fine. No Worries
They make adapters that are 24-20 or 20-24 pin...I have a bunch of both because I need them for my business.

I would be more worried about the output volts and wattage on cheap OEM PSU

 

[paparazi]

As firewolfrl says, nearly all of the first 24pin motherboards accepted both and even now, some new boards are still fine using an older 20pin PSU for a basic setup.
However, where you do need to be careful is with power hungry addons!
Using a 20pin type on a 24pin motherboard maybe fine for a basic setup but if a powerful graphics card is added for instance, those twenty pins maybe exceeding their current load design limitations.
This is when you should upgrade to a newer (quality branded) 24pin type.
Always refere to the motherboards manual.
Martin

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