How do you tell which motherboard is the oldest?

To determine which motherboard is the oldest, you can check the model number and revision printed on the motherboard itself, usually near the CPU socket or RAM slots. You can then search online for the release date of that specific model. Additionally, reviewing the chipset used on the motherboard can provide clues, as older chipsets correspond to older motherboards. Lastly, examining the physical components and features, such as the number of RAM slots and types of ports, can also indicate age.