HP 65W AC. Output power: 65 W. Purpose: Notebook, Compatibility: HP 210, HP 215, HP 250, HP 255, HP 340, HP 350, HP 355, HP Chromebook 11, HP Elite x2 1011, HP Elite. Colour of product: Black. Width: 47 mm, Depth: 28 mm, Height: 106 mm Feed your notebook with controlled servings of electricity. HP’s new 65W Smart AC Adapter regulates power and offsets electrical spikes, is designed to reduce cable stress, and includes a special dongle to support current and prior HP models – perfect for replacing your notebook’s power adapter or as a needed back-up. – Provides a convenient and portable power source for use in a mobile environment. – Shared across all HP Business Notebooks for a convenient, worry-free experience. – Energy-efficient power adapters designed to draw minimal power. – Integrated surge protector to guard against power fluctuations.