Extended warranty - 4 years - Surface Laptop Go 3 Activation: Within 45 days of purchase Device replacement within 3-5 business days (depending on country) Covers defects resulting from manufacturing errors (incl. battery and included AC adapter) Surface configuration support (90 days) Prepaid shipping Advanced exchange Please note: The warranty extension must be registered with the device serial no., which can be found on the underside of the tablet.