To insert an SD card into a desktop computer carefully, first locate the SD card slot—it’s usually on the front panel, near USB ports. Make sure your computer is on a stable surface and powered on. Hold the SD card with the label side facing up (gold contacts facing down and inward), then gently slide it into the slot until it clicks into place. Do not force it—if it doesn’t go in smoothly, double-check the orientation or refer to your PC’s manual. If your desktop doesn’t have a built-in slot, use a USB SD card reader. Once inserted, your computer should detect the card automatically.