Genuine Asus ZenBook Pro 15 Flip OLED UP6502 listed below, with the model Asus UP6502ZD charging via the Asus 150w power adapter, which outputs at 20v 7.5a and will charge your laptop or notebook via the small barrel which measure 4.5mm outside diameter and 3mm inside diameter with a pin located in its centre and the Asus UP6502ZA only needing the 19v 4.74a, 90w version.