Click the Apple logo on the top left corner of your screen to start the process. This step is essential for beginning the mac computer serial number lookup, whether you're trying to check the serial number for an iMac or find a Mac by serial number.

Click "About this Mac" to proceed. This step will display key details about your device, including the information needed for a mac computer serial number lookup. Click "About this Mac" to proceed. This step will display key details about your device, including the information needed for a mac computer serial number lookup.

Your device's serial number will appear in the "About This Mac" window. Use this serial number to perform an iMac serial number lookup or mac serial no lookup. This is essential for identifying your iMac model by serial number or conducting a mac computer serial number lookup for warranty and specs.

After locating the serial number, use it to check your iMac's model and warranty. You can perform an iMac serial number lookup or a mac serial no lookup online to get detailed information on your device's specs and status, ensuring you're prepared for a trade-in or sale.