About this item Features strong, durable construction and compact design. Charges your device at maximum current and full speed. Charging will automatically stop when the battery is full. Output Max: 19.5V 3.33A 65W (19.5V 2.31A 45W, also compatible) Input Volt Range: 100 - 240V / 50 - 60Hz, Connector size: 4.5*3.0mm. Compatible with various models including Elitebook and ProBook series, as well as multiple Chromebook and Spectre models. Built-in multi safeguards and cooling system to protect against overcharging, short circuiting, overheating, and spark, intelligently monitoring temperature to safeguard your devices. Dimensions: 8.03 x 4.72 x 1.69 inches.