He decided to look for a label he could see. Some PSUs have a second sticker on the back (where the power cord plugs in). He checked there — nothing but voltage input specs.
Leo stared at the new graphics card box on his desk. “Requires 650W PSU,” it read in bold letters. His PC ran fine, but it was a prebuilt from two years ago. He had no idea what power supply was inside.
Leo shut down his PC, unplugged the power cord, and pressed the power button for 10 seconds to drain leftover charge. He laid the tower on its side, removed the side panel (two thumbscrews), and aimed a flashlight inside.
That confirmed it. No need to open anything.
He opened Windows Search, typed “System Information,” and found nothing about power supply. He tried HWMonitor — no PSU data. Then CPU-Z, then Speccy. Nothing. Software can’t read PSU stickers because there’s no data cable from the power supply to the motherboard. Lesson one learned.
He could just plug in the card and hope. But a friend’s voice echoed in his head: “Never guess with power. Guess = fireworks.”
There it was: