This is a lot of 30 OEM HP Thin Client T510 T520 T610 T620 19.5V 65W Adapter Charger. The power adapter is compatible with HP EliteBook 6570B, HP EliteBook 6470B, HP EliteBook 8440P, and HP EliteBook 8470P laptops. The brand is HP, and the color is black. The output current is 3.33 A, and the type is a power adapter. It is compatible with HP EliteBook product line and for HP compatible brand.