Apple Portables: How to find the serial number on your MacBook

To find the serial number using software

On most computers with Mac OS X you can find the serial number in the About This Mac window. 

To find the serial number located on the computer

If the MacBook is not turned on, look at the bottom case or in the battery bay depending on your MacBook model.

MacBook (13-inch, Late 2009)

The MacBook (13-inch, Late 2009) has the serial number on the bottom case, as shown below.

Above: Location of serial number in MacBook (13-inch, Late 2009) 

MacBook (13-inch, Aluminum, Late 2008)

For instructions on how to remove this computer's battery, see How to remove or install the battery.

The MacBook (13-inch, Aluminum, Late 2008) serial number and Ethernet ID (also called a MAC address) are located on the front wall of the battery bay, as shown below.

Above: Location of serial number in MacBook (13-inch, Aluminum, Late 2008)

MacBook (13-inch), MacBook (13-inch, Late 2006), MacBook (13-inch, Mid 2007), MacBook (13-inch, Late 2007), MacBook (13-inch, Early 2008), MacBook (13-inch, Late 2008), MacBook (13-inch, Early 2009), MacBook (13-inch, Mid 2009)

For instructions on how to remove the computer's battery, see How to remove or install the battery.

The MacBook serial number and Ethernet ID (also called a MAC address) are located on the bottom of the computer, underneath the battery, in the battery bay, as shown below.

Above: Location of serial number in MacBook (13-inch), MacBook (13-inch, Late 2006), MacBook (13-inch, Mid 2007), MacBook (13-inch, Late 2007), MacBook (13-inch, Early 2008), MacBook (13-inch, Late 2008), MacBook (13-inch, Early 2009), MacBook (13-inch, Mid 2009)