The product serial number is usually located on a label on the bottom of the notebook, or it can be found in the "About This Mac" section of the system settings.

To extend battery life, we recommend that you: 1) adjust the display brightness to a moderate level; 2) use energy-saving mode; 3) close unused background applications; 4) disable unnecessary system services and features; 5) regularly update the system and drivers.

If your Margolai laptop is running slowly, try the following solutions: 1) Close resource-intensive background applications; 2) Run the Disk Cleanup tool; 3) Check for malware; 4) Increase the RAM or upgrade the SSD; 5) Perform a system recovery. If the problem persists, please contact technical support.

After purchasing online, you can check the status of your order by: 1) using the "Order Management" page in "My Account" on the official website; 2) using the tracking link in the order confirmation email; 3) contacting Customer Service with your order number. Once your order has shipped, you will receive an email notification with shipping information.