To register your Surface or get it serviced, you'll need to know its 12-digit serial number. But first, it helps to know which Surface model you have.

There are several ways you can find your Surface serial number—with the Surface app, in Settings, on the device itself, or on the packaging.

Find the serial number in the Surface app

The easiest way to find your serial number is in the Surface app.

Open the app (search for Surface in the search box on the taskbar), and your serial number is listed under Your Surface.

Find the serial number on the packaging

If you still have the original packaging for your Surface, you can find the serial number on the barcode label.

Find the serial number in Settings

Here's another quick way to find the serial number:

1. Select Start  > Settings  > System  > About .
2. On this page, find Windows Specifications, and look for your Serial number.

Find the serial number on your device

Look for your Surface model to locate its serial number.

If you have this Surface	Find it here
Surface Laptop	Look under your keyboard near the hinge.
Any Surface Pro model, Surface Go model, Surface 2, Surface 3, and Surface RT	Flip out the kickstand and look for the string of numbers near its base.
Any Surface Book (on the keyboard)	Look on the bottom edge of the Clipboard where it attaches to the keyboard. You'll need to disconnect the screen from the base.
Any Surface Book (on the clipboard)	Look on the bottom edge of the clipboard where it attaches to the keyboard. You'll need to disconnect the screen from the base.
Any Surface Studio	Place your Surface Studio screen down, and look at the bottom of the base.

Surface Headphones

Cortana can help you find the serial number for your headphones, or you can find it by looking on the headphones.

Find the serial number with Cortana

If you set up your Surface Headphones with Cortana, she can help you find the serial number.

• On a Windows 10 PC: Open Cortana, select Devices  > Manage Surface Headphones. Under About, look for the serial number. 
• On an iOS device or Android device: Open the Cortana app and select Devices > Devices > Surface Headphones > Surface Headphones > About. 

For more info on using Cortana with your headphones, see Set up Surface Headphones with Cortana.

Find the serial number in the Surface Audio app

Find the serial number for your Surface Headphones in the Surface Audio app. Here’s how:

• On a Windows 10 PC: Select the Start  button, then select Surface Audio in the all apps list. Under Devices, select Surface Headphones, then select Device details. The serial number is listed there.
• On an iOS device or Android device: Open the Surface Audio app, select Settings  next to Surface Headphones, then select About. You’ll find the serial number there.

Find the serial number on the Surface Headphones

To find the serial number on the Surface Headphones, you'll need to remove the right earmuff from the device.

To remove the earmuff:

1. Rotate the right earmuff of the Surface Headphones towards you—you should be able to see the inside of the earmuff.
2. While firmly holding the right earmuff, twist it counterclockwise. Lift the earmuff up to detach it from the headphones.
3. The 12-digit serial number will be on the headphone base. Take a note of the serial number before reattaching the earmuff. 

To reattach the earmuff:

1. Match the grooves of the earmuff with the headphone. The earmuff should be touching the headphone base all the way around.
2. With the inside of the earmuff facing you, turn it clockwise to secure the earmuff onto the headphone base.

Find the serial number for your Surface Earbuds in the Surface Audio app. Here’s how:

• On a Windows 10 PC: Select the Start  button, then select Surface Audio in the all apps list. Under Devices, select Surface Earbuds, then select Device details. The serial number is listed there.
• On an iOS device or Android device: Open the Surface Audio app, select Settings  next to Surface Earbuds, then select About. You’ll find the serial number there.

• Find the serial number on your Surface Type Cover
• https://account.microsoft.com/devices—Sign in, select Add device, then follow the instructions.
• Surface warranty: Frequently asked questions
• How to prepare your Surface for service