Compucable USB2.0 Cardbus Controller upgrades USB1.1 laptops to USB2.0 and provides data transfer support to your laptop with two USB ports. It has high-powered delivery and can support most USB2.0 external hard drives. A Y-cable isn’t needed to draw additional power from PS/2 or other USB ports as external hard drives can be accessed through bus power alone. The controller supplies 500mA to one buspower USB device and to both ports with an optional DC adapter. Mac and Windows compatible, with WIN98/Me hot-plug utility and a low profile extended back design. It is distributed by ByteZone.