Adapters are available.  Here is the link to one on Amazon Amazon.com: COMeap 24 Pin to 6 Pin ATX PSU Power Adapter Cable for Dell Motherboard with 6 Pin Port 13.3-inch(34cm) : Electronics
I have a dell inspiron 3470 and i recently bought a evga w3 500w power supply. It won't connect due to the power supply having a 24pin instead of 6pin what do i do.
Power Supply