Dell Premium Active Pen (PN579X) - Stylus - 3 buttons - wireless - Bluetooth 4.2/ Microsoft Pen Protocol - black - for (only models with active pen support) Inspiron 7378 2-in-1/ 5578 2-in-1/ 5579 2-in-1/ 5582 2-in-1/ 7579 2-in-1/ 5482 2-in-1/ 7370/ 7373