You can use a 4-pin power supply with an 8-pin motherboard if you use this adapter. This adapter costs $2.99 at the computer store.
4-Pin To 8-Pin Motherboard Power Plug Adapter
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Guide to PC Power Supply (PSU) Cables
Безопасное питание процессора 4Pin 8Pin 8+4Pin
Fuentes de Poder ATX - Parte 1
How To Jump Start A Power Supply (PSU)
convert atx power supply to bench power supply, ATX PSU hack 13,8v, 14,5v Alf
Как подключить провода к материнской плате
