Active Pen for HP Pavilion x360 11m-ad0 14M-ba0 14-cd0 15-br0; HP Envy x360 15-bp0 15-bq0, 15-cn0, X2 12-e0xx,X2 12g0xx ; HP Spectre x360 13-ac0xx 15-blxxx (Check Compatible List Before Purchase)