DC Power Adapter Car Charger for HP/Compaq 6510b 6515b 6530b 6535b 6710b 6710s 6715 6715b 6720t 6730b 6730s 6735b 6735s 6830s 6910p 6930p 8510p 8510w NC2400 NC4400 NC6320 NC6400 NC8430 NW8440 NW9440 NX6310 NX6320 NX6325 NX7300 NX7400 NX9420