Compatible Model: for Dell Chromebook 3100 9MH3J Screen Resolution: 1366x768; Screen Size: 11.6'; Connector: EDP 40pins It will be tested and packed carefully before shipping. Please turn off the power before assembly. And we provide a 3-month warranty for quality problems. Note: When opening the package, please confirm that the package is complete, this product is fragile, please operate carefully to avoid damage. Before purchasing, please reconfirm whether the product you choose is the model you need, if you have any doubts, please contact us in time.