my new powersupply plug dosn't fit

i purchased a new moterboard and processor from compusa the a bought a tower with the power supply already in the case from microcenter. but the large plug from the power supply is 4 prongs to small i thought these things were standard is there a adapter or do i need a special power supply? can someone help the motherboard is a MSI PM8M3-V i looked all over the website for the motherboard i cant find much info i dont know where else to look the motherboard has 24 pins for the plug the plug fits from the right side but leaves the left end 4 pins exposed can i still use it?i am not sure what to do any advice ....please...jim

 

You need to buy an 24 pin PSU

Most PSU that come with case/tower are Generic junk anyway
A good stable PC need's a Good Quality PSU

 

depending on the psu, like if it has an additional 4 pin power connector that you can plug into the motherboard elsewhere (usually close the the processor) then it is generally workable. many motherboards are backwards compatible with 20pin psu's, which i only learned btw cause i felt brave and didnt feel like returning my psu, lol

 

so i can plug the 20 pin plug from the power supply to the 24 pin connector on the motherboard

 

as long as the power supply you have has a 4 pin connector that is required for like ever other atx motherboard in america and there is a spot for it on your motherboard, then yes. read the manual on the motherboard and see if it says it is backwards compatible with 20pin psu's to be certain

 

yes i read the manual it says i can use the 20 pin plug and shows details i didnt think of looking in the manual i just paniced ...thanks alot...it also has the 4 pin plug for 12 volt

 

the manual says i can use the plug and gives details the 4 pin plug for 12 volt also is there i didnt think of looking in the manual i had to panic i guess thanks alot

 

lol, sure no prob, i paniced too the first time this happened to me. i had a signed contract for a computer that was due in like 2 days and i ordered the parts online, and it didnt connect, i thought i was going to have a heart attack. i was like "screw this, im seein' if it works anyway" cause i wasnt about to send parts back and wait like 2 weeks, then it worked i was like *phew* and THEN i decided to read the manual.. which had all the useful info in it, lol