The Adapter is a 45W rated power supply and replaces dell xps 13d-138 laptop charger. Designed to meet Dell's original specifications. The Replacement Dell AC Adapter is designed to be 100% manufacturer compatible and will meet OEM specifications.Always put first the DC output plug into the laptop's power jack before putting the input plug on the power outlet. This is the correct method.Keep your adapter in a dry place with room temperature. Just like other electronic devices, adapter can get damage cause by high temperature.Avoid the metal tip of the adapter from getting in contact with other metal objects because it can cause short-circuiting. Your laptop might get damage when a short-circuited charger is used.Brand New Replacement For 45W 19.5V 2.31A Dell XPS 13D-138 AC Adapter/Power Supply/Charger With Laptop Cord.Replacement For Dell XPS 13D-138 Adapter is rated at 19.5V 2.31A 45W.The high quality laptop charger for dell xps 13d-138 provides your laptop with safe and reliable power.It is over Charge protection, Voltage protection, Temperature protection, Short circuit protection, enjoys 1-Year Warranty,60-Day Money Back!