Recently, a Reddit user reported that their RTX 5090 graphics card abruptly caught fire while they were gaming, after nine months of flawless operation. The 16-pin power cable was reduced to a charred, blackened mess, with the connector melting into the body of the graphics card. Visible burn marks were evident at the cable's front end. It's worth noting that the user was employing a power supply unit that adhered to the ATX 3.1 standard, along with a native 12V-2×6 power cable, rather than an adapter. This incident has brought to light potential fundamental design flaws in the graphics card's power supply interface. When operating under high power consumption, the demands for precise contact, accurate insertion depth, and consistent resistance are exceptionally stringent. Any minor oversight could potentially trigger an accident due to the buildup of heat. This underscores the necessity for manufacturers to implement fundamental adjustments in both power supply and thermal design.