Usually located between the PCI/PCIe expansion slots or near the RAM slots. What to look for:
The label found on MSI hardware is an ACA (Australian Communications Authority) supplier code, signifying that the product is compliant with Australian EMC standards. Because this code appears on nearly every MSI motherboard, graphics card, and optical drive from the early 2000s, it cannot be used to find a specific manual.
If the PC still boots, you can find the model without a screwdriver: