Desktop ATX Power Supply Adapter Cable,24-Pin to 6-Pin Square Connector,30CM Braided 18AWG,Compatible with Inspiron/Optiplex/VOSTRO

You will want to get a high wattage itx powersupply. They are smaller which will give you more room for a gpu. The Apevia ITX-PFC500W Mini ITX/Flex ATX / 1U 500W Fully Modular Power Supplyhttps://a.co/d/00wfHuBgAs well as Dell uses proprietary power connectors so you’ll need a 24 pin to six pin adapter because your model uses a six pen for power. So you would need something like this. https://a.co/d/0dm5AmsbCheer 🍻