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MacBook Air 13 Late 2020 LCI

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Liquid Contact Indicators

Liquid Contact Indicators for MacBook Air (M1, 2020

The top case includes spill sensors called liquid contact indicators (LCIs) to help discover accidental damage to the computer. The sensors are visible only when the bottom case has been removed. The LCIs are visible with an ultraviolet flashlight (UV) when they have come in contact with liquid, such as an accidental spill.

How to Read Liquid Contact Indicators with Ultraviolet (UV Light

MacBook (Retina, 12-inch, 2017), MacBook Air (Retina, 13-inch, 2018 and 2019), MacBook Air (M1, 2020), MacBook Pro (2018, 2019, and 2020), and MacBook Pro (13-inch, M1, 2020) contain spill sensors called liquid contact indicators (LCIs). LCIs help discover accidental damage to the computer. They are black, and liquid contact is only visible with the use of a UV light. LCIs appear black under normal light and glow blue when highlighted with a UV light. They turn pink or produce a pink halo when they come in contact with liquid.

Note: MacBook Pro (15-inch, 2018 and 2019) also has one LCI that appears white and turns pink when it comes in contact with liquid.

Important: A triggered LCI is not the only evidence of liquid contact. Be sure to inspect for corrosion or liquid residue during

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