For HP Laptop Charger/Power Supply 19.5 V 2.31A 45W Blue Tip 4.5x 3.0mm UK Plug
Output: 19.5V, 2.31A, 45W (Stable Rated Power). Exact 45W output specification, perfectly matches the power needs of listed HP devices. Plug Type: 3-Pin UK Plug. DC Tip Size: 4.5mm 3.0mm (Precise Connector Size).